A collection of mineral crystals stored in a warehouse in Kunming City, Southwest China's Yunnan Province, May 6, 2019. The owner, Mr. Tang, said the mineral crystals were of various shapes and were from the province's Weishan Yi and Hui Autonomous County, with the biggest one weighing 52.6 tons. (Photo: China News Service/Ren Dong)
A collection of mineral crystals stored in a warehouse in Kunming City, Southwest China's Yunnan Province, May 6, 2019. The owner, Mr. Tang, said the mineral crystals were of various shapes and were from the province's Weishan Yi and Hui Autonomous County, with the biggest one weighing 52.6 tons. (Photo: China News Service/Ren Dong)
A collection of mineral crystals stored in a warehouse in Kunming City, Southwest China's Yunnan Province, May 6, 2019. The owner, Mr. Tang, said the mineral crystals were of various shapes and were from the province's Weishan Yi and Hui Autonomous County, with the biggest one weighing 52.6 tons. (Photo: China News Service/Ren Dong)
A collection of mineral crystals stored in a warehouse in Kunming City, Southwest China's Yunnan Province, May 6, 2019. The owner, Mr. Tang, said the mineral crystals were of various shapes and were from the province's Weishan Yi and Hui Autonomous County, with the biggest one weighing 52.6 tons. (Photo: China News Service/Ren Dong)
A collection of mineral crystals stored in a warehouse in Kunming City, Southwest China's Yunnan Province, May 6, 2019. The owner, Mr. Tang, said the mineral crystals were of various shapes and were from the province's Weishan Yi and Hui Autonomous County, with the biggest one weighing 52.6 tons. (Photo: China News Service/Ren Dong)