Group 1 - The core viewpoint of the article revolves around the recent disappearance of Ba Shusong, a prominent economist and former Chief China Economist at the Hong Kong Stock Exchange, which has raised significant market attention [1][2] - Ba Shusong is reported to be involved in an illegal fundraising case and was taken away by authorities around March 12, 2026 [1] - Ba Shusong has a substantial public presence, with over 11.39 million followers on Weibo, and has held various prestigious academic and professional positions [1][2] Group 2 - Ba Shusong's research areas include financial institution risk management, financial market regulation, and the Basel Capital Accord, where he has made notable contributions [2] - He has played a key role in the design of cross-border trading mechanisms such as Shanghai-Hong Kong Stock Connect and Bond Connect [2] - His professional history includes significant roles in various financial institutions and government bodies, highlighting his influence in the financial sector [2]