As Japanese forces gained ground, the family moved to southwest China. Days after turning 16, Mr. Zhang joined the army of the Nationalist government and was sent to fight in the India-Burma border region. After Japan’s defeat, he enrolled at Chaoyang University in Beijing, where he studied law. He also became increasingly involved in underground Communist Party politics.
When Mao’s forces came to power in 1949, Mr. Zhang, one of the few party activists with legal training, was assigned to work as a judge in a Beijing court, although he was only 21. Filled with revolutionary zeal, he used a sharp tongue when criticizing older court officials, although he later came to regret being so harsh.
As Mao tightened his grip, Mr. Zhang also became a target of official suspicion and criticism, partly because of his time in the defeated Nationalist forces. After being labeled a “rightist” in 1957, he was stripped of his Communist Party membership and sent to labor in the countryside. His law books were sent off as scrap paper. He later taught at a school in Beijing, his legal career apparently behind him.
After Mao died in 1976, Mr. Zhang’s talents were again needed as China’s new leaders began rebuilding the legal system. He received a request in 1980 to act as a defense lawyer for the Gang of Four and other former officials facing trial over their role in the extremes of the Cultural Revolution. More experienced lawyers had refused the high-pressure job; Mr. Zhang agreed, though he loathed the Cultural Revolution.
The defendants — including Jiang Qing, Mao’s widow — were accused of usurping power and persecuting officials. Ms. Jiang rejected Mr. Zhang’s offer to represent her, and he later said he regretted that he could not defend her vigorously in the highly rehearsed trial.
When another former official, Li Zuopeng, stood trial, Mr. Zhang and his colleagues persuaded the judges to reject two of the most serious accusations. Ms. Jiang received a suspended death sentence, commuted to life in prison; Mr. Li was sentenced to 17 years in prison.