Ning You is the youngest in this craft - a designer of opera water sleeves with drape, crease and solid shape, known in the circle as "sleeve bone master". She can judge the moisture content of silk by the feel of the hand, and calculate how many degrees and seconds a certain pleat should be pressed within three seconds. After the graduation drama three years ago, martial arts student Xie Yan said to her, "I'm going to Beijing, and you can't come with me." She crumpled her newly-made sleeves into a ball in front of him. See you again three years later. Xie Yan returned to the Provincial Peking Opera Theater to perform in "The Palace of Eternal Life". She was wearing the plain pleated dress she had worn back then - the cuffs of the sleeves collapsed into soulless straight lines, each of which seemed to say, "You have no ability to keep it." The crew had to work at high temperatures and speed up the production, washing in the laundry ruined three months of hard work, and the stage was baked again and again under the spotlight, causing the creases to evaporate out of thin air. Ning You sticks to the bottom line of her craftsmanship, while Xie Yantai relies on her sleeves to perform. But the folds will collapse if they are set, and the emotions will go out of shape if they are deliberately maintained. Three years ago, he chose a future, and three years later, she decided to let him go on her own initiative - letting him go and allowing her skills to truly stand up.