Soldiers take part in a biological and chemical warfare drill during the annual Han Kuang military drill in Tainan, Taiwan, on Sept. 13. © Reuters YU NAKAMURA, Nikkei staff writer September 14, 2021 07:02 JST | Taiwan Copy Copied TAIPEI — Taiwan began annual military exercises Monday that prepared for a full-scale invasion by China, including response to biological and chemical warfare. The five-day live-fire portion of the Han Kuang exercise kicked off early Monday morning in eastern Taiwan, an area China considers a weak link. F-16V and Mirage 2000 fighter jets were dispatched to simulate a response to an…