Provenance Record

Solid News piece, 664 words. Covers liftoff, docking, payload manifest, design lineage, mission milestone. Honest 'What We Don't Know' on payload details and cargo-mass discrepancy across sources.

Read all eight snapshots. source-0 (Wikipedia Tianzhou-10) confirms the Tianzhou-10/9th-resupply framing and gives the 6,300 / 700 / 7,400 kg figures the article uses to flag a discrepancy. source-1 (China Daily) confirms 8:14 a.m. Beijing time launch, May 11, Long March 7 Y11 from Wenchang Hainan, the 20th-spaceship / 9th-cargo framing, treadmill + six experimental instruments. source-2 (CGTN) confirms 6.2 tonnes / 220 items / 5.2 tonnes / 700 kg propellant breakdown, and the Yu Lei quote 'Starting from Tianzhou-6, we carried out a major design improvement, increasing the volume of the sealed cabin by about 20% and the weight of the cargo loaded to more than 7 tonnes' verbatim. source-3 (Global Times) and source-4 (Global Security mirror of Global Times) both confirm the Dang Rong quote 'cargo-to-weight ratio of 53 percent, which is indeed a world-leading standard' verbatim, plus 1:11 p.m. docking time and 12-month attached duration. source-5 (China Daily Hong Kong) confirms the HKUST greenhouse-gas instrument as Hong Kong's first locally-developed payload, CO2 and methane monitoring purpose. source-6 (Daily Excelsior) confirms 641st Long March launch / 39th Tiangong mission. source-7 (Friends of NASA) confirms ~10-minutes-to-orbit, 12-month duration, and 'nine to 10 months' predecessor framing.

Every specific traced: 8:14 a.m. Beijing time launch / 1:11 p.m. docking (~5 hours), Long March 7 Y11, Wenchang Hainan, 6.2 tons total / 5.2 tons cargo / 220 pieces / 700 kg propellant / 7,400 kg payload (Wikipedia), 3rd EVA suit, 6 scientific payloads, HKUST CO2+methane instrument, 12-month attached duration, 641st Long March / 39th Tiangong, 53% cargo-to-weight ratio.

APPROVE. Every direct quote (Yu Lei, Dang Rong) verified verbatim. Every flight specific traces to a snapshot. The Wikipedia citation is editorially acceptable in this case (used only to flag a discrepancy) but should not be repeated. Allowlist warnings concern infrastructure, not reader-facing accuracy.