Dead longan trees threaten the surrounding buildings, people or wires and need to be removed to ensure safety. The death of longan trees is caused by diseases or pests, and preservation will lead to the spread of diseases or pests in other surrounding plants. Trees were removed to protect the health of other plants. Dead longan trees will wither, rot and collapse, which will have a negative impact on the beauty of the surrounding environment. In order to keep the landscape clean and beautiful, it needs to be demolished.

Longan is a common fruit tree, belonging to Sapindaceae, which is native to southern China. It is called longan fruit tree or longan for short. Arillus longan is widely cultivated in many subtropical and tropical regions.