A tree turns dark green on sunny days and red when it rains.

In Dinglong Village, Xincheng County, Guangxi, China, there is a green bar tree that is over 100 years old. Its leaf color changes with the weather: on sunny days, the leaves are dark green; After a long drought, the leaves turn red; When the weather cleared up after the rain, the leaves returned to their original dark green. You should be talking about this tree (Qinggang Tree), but it may be just one, not one.