Query: Who was the Ming Chinese official?
Context: Sonam Gyatso, after being granted the grandiose title by Altan Khan, departed for Tibet. Before he left, he sent a letter and gifts to the Ming Chinese official Zhang Juzheng (1525–1582), which arrived on March 12, 1579. Sometime in August or September of that year, Sonam Gyatso's representative stationed with Altan Khan received a return letter and gift from the Wanli Emperor (r. 1572–1620), who also conferred upon Sonam Gyatso a title; this was the first official contact between a Dalai Lama and a government of China.