Hello, My Lord, I Want to Order in Advance!

In order to repay her huge debt, she signed a secret experiment agreement and ended up lying in a coffin and crossing into the river. The hero who saves her is Long Jingyu, the Prince of Chao Jing, who is unrivaled in elegance and gentleness. Acting coquettishly is a special skill, and the trump card is - if you don't agree, I will die!