2. For the blocked or fallen bark, it can be disinfected first to restore the bark to its original state, soaked and washed with tree stem injection, then wrapped tightly with straw rope or hemp strips, soaked and washed repeatedly with tree stem injection every once in a while, and disinfected again in a week or so.

3. If the bark falls off completely, use wound healing agent, and then tie it with straw rope or hemp.