Jiang Yaota wanted a smart head.
He wants to get into the best school and get ahead.
So he made a deal with the evil god. He gave the evil god the faith to walk freely in the world, and the evil god helped him get good grades in the exam.
But slowly, the evil god's demands became more and more outrageous; and Jiang Yao also discovered that the evil god's help was just a scam.
Purpose: Success requires down-to-earth hard work and cannot be opportunistic. We must establish a correct view of love.