When preparing lessons, I put "Qing Yun Zhi" aside, and when I heard green tea, I felt something was wrong. As the biggest product placement in the play, the product placement method is very novel. On Chang 'an Avenue in Chu Qiao Biography, there is a signboard with the words "Royal Mud Workshop" printed on it. The picture in just 3 seconds is impressive. In order to blend naturally with the style of the whole drama, the fonts on the plaque have been moderately adjusted, which is very chronological.