The clearest sign that Jeremy Lin’s appeal has spanned the Pacific to mainland China may lie not in the 1.4 million Chinese microblog messages mentioning him in recent days, but in a rare failure to meet demand here in the heart of one of the world’s largest centers of pirated garment manufacturing.

“His jerseys have sold out, even including the counterfeit ones,” said Zheng Xiaojun, a 24-year-old clerk here in the capital of Zhejiang province, near Shanghai.