“I’m no longer a boy, but I've got a boy’s heart,” said Ding Xiaohui. (Photo/VCG)

Ding Xiaohui, 45, living in Hangzhou, spends tens of thousands of yuan each year on the collectibles. He rents two warehouses in the suburbs just to store these action figures. (Photo/VCG)

Ding says his hobby is healthy but a bit expensive. (Photo/VCG)

Ding developed this craze for action figures at an early age. In the early 1990s, when the American animation Transformers was first aired in China, Ding’s father spent half of his monthly salary on purchasing a Transformers collectible figure for Ding. Ding still keeps the toy. (Photo/VCG)

Ding’s collectibles range from Bruce Jun Fan Lee to military generals of the Three Kingdoms period, from modern soldiers to the Avengers. Figures from various dimensions meet each other at Ding’s warehouse. (Photo/VCG)

At peak times, Ding kept over 300 soldiers and thousands of toys that worth millions of yuan. (Photo/VCG)

The market price of these collectibles grows gradually. The price of the Iron Man in his hand is over RMB 10,000 yuan. (Photo/VCG)