Goldwind (2208.HK) tumbled 8.2% in Hong Kong trading to HK$10.23, as commercial aerospace concept stocks weakened broadly. The selloff follows the failed launch of China's Zhongxing-4B satellite on the evening of August 10, with the rocket experiencing an anomaly during flight. The cause is under investigation. Separately, according to unverified online reports, LandSpace's Zhuque-3 Y2 launch window has been adjusted and may be delayed to August 31.