Dead trees spring a few branches, green leaves know that spring is soft and rain is applied. Dead trees will reappear in spring, and people will no longer be young. Dead trees germinate in spring.

Dead wood meets spring, an idiom in China. This means that dead trees come back to life in spring. A metaphor for a dying patient or thing coming back to life. From Song Shi Dao Yuan's Record of Jingde Dengchuan.