Liu Tuanxi, an explorer and a technical guide for the expedition, and his team members climbed to the top part of the tree to complete the survey.

It took three people almost eight hours to reach to the treetop. The climbing was mainly completed by means of ropes, without nailing the giant tree. All equipment was collected and taken away without causing any damage to the tree, Liu Tuanxi was quoted as saying in an interview by Beijing Youth Daily.

"While almost reaching the top of the tree, I worried the tree would break by wind as it was as tall as a 28-story building. I gradually calmed down and was amazed by the gorgeous beauty and mighty nature," he said.

"After I became more relaxed near the top of the tree, I took a nap up there."