I once knew a young man named Cheng Tianxiao.
I no longer remember the circumstances under which we met. I only remember the story he told me that day. He told me that on a special day that was not special, he met a strange man in the library.
I thought he was going to tell me how ridiculous or irritating the weirdo was next, but instead he told me - "I was involved in a prehistoric war."
"Is it a battle between gods and demons?" I asked.
He shook his head and said he didn't know.
Then he told me his story...
