Tang Hui didn't give up and, after three months searching her hometown of Yongzhou, discovered where her daughter was being held.

BBC: Reforming China's gulags

Left, the founder of the Los Angeles-based research firm told CNBC, it was the degree awarded to Evergrande Chairman Dr. Hui Ka Yan that sparked its investigation of the firm three months ago.

FORBES: Hui Ka Yan

Ayau says Hui Malama members believed they had consensus from the other three groups when they checked all 83 objects out of the museum, reburied them in the caves, and sealed up the entrance.

NPR: Hidden Treasures: Hawaii Custody Battle