Bao Tong, former political secretary of the deceased reformist party leader Zhao Ziyang, died in Beijing Wednesday, four days after his 90th birthday. “Obituary notice for my late father Bao Tong, who passed away peacefully at 7:08 a.m. on Nov. 9, 2022, at the age of 90,” Bao’s son Bao Pu wrote on Twitter. Bao’s…