No. Zhang Shengtan was a literary critic in the late Ming and early Qing Dynasties, and Jin Shengtan was his original name. He was wild and uninhibited, good at writing and poetry, but he didn't want to take the imperial examination, changed his surname to Zhang, and built a prosperous building to write and comment on books. Jiuzhuan Shen Huandan is an elixir in The Journey to the West, and Zhang Shengtan is a realistic figure, while Jiuzhuan Shen Huandan is a fictional elixir in literary works, so Zhang Shengtan didn't eat Jiuzhuan Shen Huandan.