China's crewed lunar program cleared a key milestone on February 11 when the Mengzhou capsule survived its first in-flight abort test, pulling cleanly away from a prototype Chang Zheng 10A booster during powered ascent and splashing down safely in the South China Sea. Months later, the program is still focused on its next phase: the CZ-10B, the first full-scale production variant of the rocket family, has completed pad flow at Wenchang but is still waiting for its first orbital flight window after the April 28-30 attempt slipped into May. The original abort test was only part of the story. The booster that launched it also demonstrated a controlled propulsive descent and vertical splashdown , and the team spent the weeks after the February flight preparing a production-configuration rocket for a much harder recovery test. China is closing in on all the hardware it needs to put astronauts on the Moon before 2030, and the delayed debut remains one of its most significant rocket demonstrations yet. The Mengzhou capsule completed its first in-flight abort test on February 11, 2026. Credit: AI-generated illustration May 25, 2026 Update: CZ-10B Still Waiting for Its Debut Window The CZ-10B did not fly during the late-April hazard window, and no successful launch has been reported as of May 25. The practical status is unchanged but sharper: the rocket appears to have cleared fueling practice at Wenchang, the recovery architecture remains the key test objective, and the next public signal will likely be a fresh airspace or maritime notice tied to Wenchang Commercial Launch Site Pad 2. The delay matters because this is not only an orbital debut. It is also China’s first attempt to demonstrate the production path for a reusable crew-class launch vehicle, with a ship-based booster recovery concept that uses hooks, tethers, and a net rather than landing legs. Chang’e-7 is still the other major 2026 lunar marker, with spacecraft elements reported at Wenchang for final integration ahead of a planned south pole mission later this year. CZ-10B: Delayed to May, Hardware Ready The Chang Zheng 10B is the first full production-line member of the CZ-10 family to attempt an orbital flight. It differs from the CZ-10A prototype used in the February abort test in one critical way: it carries a second stage powered by a YF-219 methalox engine, giving it the upper-stage performance needed to reach orbit rather than just the suborbital arc used in the abort test. The rocket rolled out to Wenchang's Pad-2 around April 8-9, completed a successful wet dress rehearsal by mid-April, then returned to the horizontal integration facility for payload integration. On April 24, it completed a key propulsion test. The vehicle returned to the pad and was ready for the April 28-30 NOTAM window. The launch did not occur. Chinese sources cite weather conditions in Hainan Province as the reason for the delay, with no technical anomalies reported. The revised target remains NET May 2026. Earlier tracking sources pointed to mid-May, but that window passed without a public launch report, leaving range timing and maritime recovery conditions as the main items to watch. AI-generated image The CZ-10B on the pad at Wenchang, with a NOTAM window opening April 28. Credit: AI illustration What makes this flight particularly significant is the booster recovery objective. On the same mission that inserts a payload into orbit, the CZ-10B first stage is expected to perform a propulsive return and cable-net catch attempt on a recovery barge positioned approximately 550 km downrange in the South China Sea near the Zhongsha Islands. The first stage carries grid fins and recovery hooks, matching the hardware configuration validated on the February prototype. CZ-10B First Orbital Flight: Mission Profile Launch site: Wenchang Commercial Space Center, Pad-2 (HCSLS LCC-2) Original target window: April 28-30, 2026 (NOTAM issued), delayed to NET May 2026 due to weather Primary objective: First orbital insertion by any CZ-10 variant Secondary objective: First-stage cable-net catch, ~550 km downrange in the South China Sea Propulsion: First stage: YF-100K kerolox engines (7); Second stage: YF-219 methalox Recovery hardware: Grid fins and arresting hooks on first stage interstage Pre-launch milestones completed: WDR (mid-April), propulsion test (April 24) This is an aggressive test plan by any standard. SpaceX flew multiple Falcon 9 missions before attempting booster recovery, and it took several failed attempts before landing the first booster in December 2015. China is attempting orbital insertion and maritime booster recovery in a single flight. Program officials have not publicly stated whether the recovery attempt is a primary or secondary objective, leaving open the question of how the mission will be scored if the orbit is achieved but the catch is not. Mengzhou: What the Abort Test Proved and What Comes Next The February 11 abort test was the third major ground-truth event for the Mengzhou capsule, following earlier parachute airdrop testing and a zero-altitude pad abort in June 2025. For this test, the uncrewed capsule rode a shortened CZ-10A prototype booster to the point of maximum dynamic pressure, the worst possible moment for an ascent emergency, and executed a clean separation. The abort motors pulled Mengzhou clear while the booster's engines continued burning, then the capsule descended under three parachutes to a soft splashdown. What made the test unusual was the simultaneous evaluation of the booster. After separating from the capsule, the CZ-10A prototype continued upward to approximately 105 kilometers, then descended under its own propulsive control, reigniting three of its five YF-100K engines for an entry burn and again for landing, before settling to a controlled vertical splashdown. Recovery crews retrieved the stage from the South China Sea, and engineers are now inspecting those engines, which are the first rocket engines ever recovered from seawater under China's program. In late February, the Mengzhou capsule underwent further sea trials near Wenchang. Those tests evaluated flotation stability in both unassisted and assisted states, simulating what happens if a capsule lands at sea during a crewed mission and must float for an extended period before recovery vessels arrive. Passing these tests is a certification requirement before any crewed flight. Why Extended Maritime Testing Matters Mengzhou will normally land in Inner Mongolia, near Jiuquan, just like the current Shenzhou capsules. But sea recovery is the contingency plan, and for crewed lunar missions, recovery windows in open ocean could last hours or longer in bad weather. The ongoing Hainan tests evaluate how the capsule maintains buoyancy, cabin pressure, and crew survivability conditions while floating and awaiting pickup. Passing these tests is a requirement before any crewed flight certification can proceed. An uncrewed orbital demonstration of Mengzhou is planned for later in 2026, when the capsule will dock with the Tiangong space station to verify rendezvous and docking systems under realistic conditions. The capsule is designed for reuse from the start, with a replaceable lightweight heat shield structure that can be swapped between missions, reducing per-flight refurbishment costs compared to a design that requires extensive structural inspection after each reentry. 3 Abort test milestones completed 5 YF-100K engines per CZ-10A booster ~105 km Booster peak altitude in Feb 11 test 2030 Target year for crewed lunar landing The Chang Zheng 10 Family and China's Novel Booster Catch Design AI-generated image The full Chang Zheng 10 heavy-lift rocket, combining the Mengzhou capsule and Lanyue lander on separate launches, is targeted for its debut later in 2026. Credit: AI illustration The CZ-10 family is now a four-variant program. The CZ-10A is the short-body prototype used for the February abort test and early recovery demon