Huangquan Postman

I am a postman from the underworld, traveling between the Yin and Yang worlds. Whether it is a Yin soul or a Yang person, there will be a day when they ask for my help. I thought I could spend this life safely, but I didn't expect that my fate could not be controlled by God. That day, I just wanted to make more money, but the things I sent over cost the lives of a family of five! Only then did I discover that the "Illustrated Records of the Hidden Sky" passed down from my ancestors contained a shocking secret. I was also forced to embark on a journey of almost death...