As long as there is no plateau reaction, of course you can go for a second time, or even a third time.

Note: July 30, 2017, when my husband and wife hiked from Luojiong Cow field to the Milk Sea (elevation 4600 meters) and the five-color sea (elevation 4700 meters), and then returned to Luojiong Cow field (elevation 4180 meters), in order to enjoy the beautiful scenery of the road, and then all the way trotting to the Okkoji Temple (3900 meters above sea level, the journey of about 6 kilometers, most of the sections of the wooden trestle road) in order to catch up with the last class sightseeing bus to Yading village accommodation, the result of the whole night, the whole night, the whole night, the whole night, and the whole day. The last class sightseeing bus to Aden village accommodation, the result of the whole night sound sleep ten hours, delayed to see the starry sky.