Taoism is polytheistic religion. The gods and immortals(神仙) believed in by Taoism can be roughly divided into two categories, namely "gods" and "xian" (immortals).
xian 仙 "transcendent; immortal; saint; celestial being; alchemist". zhuan 傳 "commentary on a classic (e.g., Zuozhuan); biography; tradition". The word shenxian 神仙 can be parsed either as shénxiān "gods and transcendents" or as shénxian "divine transcendent". Shenxian commonly occurs in Standard Chinese usage.
In acupuncture, shen is a pure spiritual energy devoid of memory and personality traits, whereas hun is the spiritual energy associated with the personality and po the energy tied to the sustenance of the physical body.