China completed a wet dress rehearsal of its Long March 10B reusable rocket over the weekend at the Hainan Commercial Space Launch Site, a milestone that positions the vehicle for its maiden flight within weeks and marks a sharp acceleration in Beijing’s bid to master rocket reusability.

Unofficial images and footage circulating on Chinese social media showed the 5.0-meter-diameter rocket rolled out to its pad near the national Wenchang spaceport on Hainan island, where its first and second stages were filled with and then vented propellant, the classic signature of a wet dress rehearsal or static fire test. No official announcement or airspace closure notices have appeared, consistent with how China’s state-led launch campaigns typically unfold.

But the fueling test, reported by SpaceNews, sends an unmistakable signal: the Long March 10B is real, loaded, and nearly ready.

A Cargo Workhorse for the Megaconstellation Age

The Long March 10B is the cargo variant of the Long March 10A, which was designed to carry astronauts aboard China’s new Mengzhou crew capsule to low Earth orbit. Where the 10A puts people in space, the 10B is built to haul hardware. Previous statements from China’s state-owned contractor CASC indicate the rocket can place 11,000 kilograms of payload into a 900-kilometer orbit at 50 degrees inclination.

That specific orbital profile is not arbitrary. It matches the requirements of China’s Guowang megaconstellation, a sprawling satellite internet system intended to rival SpaceX’s Starlink and Amazon’s Project Kuiper. Deploying thousands of broadband satellites demands not just big rockets but frequent flights, and the Long March 10B’s reusability is aimed squarely at that cadence problem.

Eleven metric tons to a 900-kilometer orbit is a substantial figure. It would allow batch deployments of Guowang satellites on a single flight, reducing the number of launches needed and, if reuse works reliably, driving down per-kilogram costs in a way that China’s existing expendable fleet simply cannot.

Nets, Hooks, and No Landing Legs

What makes the Long March 10 series distinctive among the global field of reusable rockets is its recovery method. Rather than the powered vertical landings perfected by SpaceX’s Falcon 9 and attempted by others, the Long March 10’s first stage is designed to be caught by a vessel-mounted net system. The stage itself carries catching hooks instead of landing legs, an approach that saves dry mass and simplifies the booster’s structure.

This concept was given a real-world validation in February 2026, when a single-stage test article of the Long March 10A conducted an in-flight abort test for the Mengzhou crew capsule. After separating from the spacecraft, the stage performed a controlled propulsive descent and splashdown near a recovery vessel. That successful demonstration may have cleared the path for a full recovery attempt during the Long March 10B’s first orbital flight.

The net-and-hook approach is a calculated engineering bet. Landing legs add weight and complexity. Vertical landings on droneships or pads require extremely precise guidance in the final seconds of descent. A net system, by contrast, offers a wider margin for positioning error. It also removes the need for the stage to carry the additional propellant required for a hover-and-land maneuver. The tradeoff is that it demands a capable recovery ship, and the net system must handle the mechanical shock of catching a returning booster stage at speed.

The Long March 5 Lineage

The Long March 10 series did not emerge from a blank page. It is rooted in the expendable Long March 5, a kerosene-liquid oxygen rocket that debuted roughly a decade ago and has since become one of China’s most consequential launch vehicles. The Long March 5 carried the Tianwen-1 Mars mission, enabled China’s Chang’e-5 lunar sample return, and lofted the core modules of the Tiangong space station.

The Long March 10 retains the same 5.0-meter core diameter as the Long March 5 but uses upgraded, variable-thrust YF-100 series engines. Variable thrust is essential for reusability: the engines need to throttle down significantly for landing burns, something the original YF-100 engines were not designed to do. The upgrade represents a meaningful step in China’s propulsion engineering.

The full Long March 10 configuration is conceived as a common booster core vehicle, capable of assembling into different variants for different missions. In its most ambitious form, it would send both a crewed Mengzhou spacecraft and a separate lunar lander stack into trans-lunar injection for China’s planned crewed moon landing.

A Crowded Year for Chinese Reusability

The Long March 10B is not the only Chinese reusable rocket pressing toward flight. The Shanghai Academy of Spaceflight Technology (SAST), another major rocket developer under CASC, launched its 3.8-meter-diameter Long March 12A from Jiuquan in December 2025. That flight included a downrange propulsive recovery attempt with landing legs. It failed. But SAST pressed on, conducting a static fire test for the similarly reusable Long March 12B in January 2026.

Commercial company Landspace is expected to make a second flight and recovery attempt with its stainless steel Zhuque-3 rocket in the second quarter of this year. The material choice is notable: stainless steel is the same material SpaceX uses for Starship, prized for its thermal properties and low cost relative to carbon composites or aluminum-lithium alloys.

China is, in effect, running multiple reusability programs simultaneously across state and commercial entities, using different recovery methods. Landing legs, net catches, propulsive descent. The approach is less a single national architecture than a broad experimental campaign, with CASC and private companies all racing to find what works.

The Lunar Clock Is Ticking

All of this unfolds against the backdrop of an intensifying US-China competition to put astronauts on the Moon. NASA’s Artemis II mission launched in early April, sending four astronauts on a flyby around the Moon for the first time in more than half a century. The Orion spacecraft is still in flight as of this writing, with its critical atmospheric reentry yet to come.

China has stated its intention to land astronauts on the lunar surface by 2030. The Long March 10 series is central to that plan. The Long March 10A is expected to debut later this year carrying the Mengzhou spacecraft on its first orbital flight, a mission that will likely depend on how the 10B’s maiden launch goes, given the two variants share a common first stage.

A separate Long March 10A mission is also planned for this year in combination with an upper stage from commercial outfit CAS Space, aimed at a translunar trajectory. CAS Space confirmed the existence of that mission to SpaceNews, though China’s human spaceflight agency, CMSEO, has not disclosed the payload or objectives.

The pace is striking. If the Long March 10B launches successfully in the coming weeks and achieves first-stage recovery, China will have demonstrated orbital-class reusable flight with a net-catch system, a method no other nation has attempted at this scale. If it fails, the learning still feeds forward into the crewed variants that follow.

What the Fueling Test Actually Tells Us

A wet dress rehearsal is not a launch. It is a systems integration test: loading cryogenic and storable propellants into the rocket’s tanks while it sits on the pad, running through countdown procedures, and then draining the vehicle. It stresses thermal management, ground support equipment, and the interfaces between rocket and pad. It is the last major gate before a launch attempt.

The fact that China completed this rehearsal without an official announcement is consistent with past practice but also reflects a certain institutional caution. Beijing’s space program tends to publicize successes after they happen, not before. The social media images that leaked suggest confidence at the pad, but the absence of airspace notices means the launch window has not yet been formally opened.

Weeks, not months. That is the implied timeline. For a rocket that could reshape how China accesses orbit and how it builds its way to the Moon, the quiet at Hainan is the loudest signal.

Photo by Abderrahmane Habibi on Pexels