Why do lions have to choose green?

According to legend, "picking green" originally meant "fighting against the Qing Dynasty and regaining sight", but now it is generally taken as a symbol of "prosperity" and prosperous business. "Green" uses lettuce. Hanging lettuce and vegetable market (red envelopes), the lion jumped a few times in front of the "green" to show hesitation, then jumped up, "ate" the vegetables, and then "chewed up the lettuce" to greet everyone. In order to increase the entertainment, picking green sometimes uses unique skills, such as shouldering (lion-headed dancers stand on the shoulders of lion-tailed dancers), folding arhats, climbing poles (climbing bamboo poles), or crossing plum tree stumps (crossing long stumps of different heights) and so on.