董事长被刑拘，北大医药盘中跌逾5%

Core Points - North China Pharmaceutical (000788) experienced a significant stock price drop, falling over 5% during trading, with the stock priced at 5.83 yuan per share, reflecting a decline of 5.51% [1] Company Summary - The company announced that its chairman and president, Xu Xiren, has been criminally detained and is currently cooperating with relevant authorities in an investigation, which has temporarily hindered his ability to perform his duties [1]