God killed the dragon.

Mozi went north to Qi State and met a fortune teller on the way. He said to Mozi, "God killed the black dragon in the north today. Sir, it's dark and you can't go to the north. " Mozi didn't listen to advice and went to the north. When I got to Zishui, I couldn't cross the river smoothly, so I had to return. The fortune teller said, "I told you Mr. Wang Can not to go to the North."

Mozi said: "Southerners can't go north, northerners can't go south, some have black skin and some have white skin." Why can't they cross the purple water smoothly? " In addition, God killed the dragon in the east on the first and second days, the red dragon in the south on the third day, the white dragon in the west on the Geng Xin day, and the black dragon in the north on the unhealed day. Do as you say, and everyone will be banned from the road. This is a way to trap people and make the world empty. You really don't listen. "