Why didn't Taoist Zhang Zhishun leave the body?

Have a tangible body. According to relevant records, Zhang Zhishun's body has been preserved in the Taoist temple since his debut, and has not been corroded so far. Zhang Zhishun was the honorary president of Hainan Taoist Association, the honorary abbot of Eight Immortals Palace in Wanshou, and the abbot of Yumen Temple in Hainan Province. Shenqiu, Henan, was born in 19 12. July 28th, 20 15, June 13th, the second year of the lunar calendar, Zhang Zhishun Daochang 103.