Original sentence: It was Jigme, then a senior Tibetan official, who surrendered Chamdo to the People's Liberation Army and signed the Seventeen Point Agreement with the Chinese Communist government in 1951
Edited sentence: His role in the Chinese occupation of Tibet was sometimes depicted as treason, although he had apparently not much choice but to cooperate with the Chinese.It was Jigme, then a senior Tibetan official, who surrendered Chamdo to the invading People's Liberation Army and signed the Seventeen Point Agreement with the Chinese Communist government in 1951, surrendering Tibet's sovereignty in exchange for guarantees of autonomy and religious freedom