Who does "one person is missing" in Wang Wei's poems mean?

Wang Wei himself. In Wang Wei's poem "I miss my brothers in Shandong on vacation in the mountains", this sentence is inserted all over the ground, and it is usually thought that one of the few people refers to Wang Wei himself. This is because his brothers in his hometown all wore dogwood when climbing the mountain on the Double Ninth Festival, and he was not there, so one person was missing to indicate his absence.