The new year is here! It's time for Zhang Yiran to buy greeting cards for her parents again. But this year, she has a different idea. 新年到了！张壹冉又该给爸妈买贺卡了。但是，今年她有一个不同的想法。"It's a waste to buy cards. One 10-year-old tree will be cut down to make 1,000 cards...