1. 

   China's best-known entrepreneur, e-commerce billionaire Jack Ma, made his fortune by taking big risks. Ma's latest gambit backfired after he called regulators too conservative in an October 24 speech and urged them to be more innovative. They halted the impending stock market debut of Ant Group, an online finance platform that grew out of Alipay. Alibaba's share price sank, possibly costing Ma his status as China's richest tycoon. Since then, the normally voluble Ma has stayed out of the public eye, cancelled a TV appearance and avoided social media. That has prompted a flurry of speculation about what might happen to Ma, China's biggest global business celebrity and a symbol of its tech boom. (AP Photo)

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   The former English teacher founded Alibaba Group in 1999, when China had few internet users. (AP Photo)

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   Online payments service Alipay launched five years later, before regulators said such businesses would be allowed. Both long shots grew to dominate their industries. (AP Photo)

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   Ma's high profile is unusual in a society where folk wisdom warns, “a man fears getting famous like a pig fears getting fat.” (AP Photo)

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   “The Jack Ma Era is ended,” wrote a blogger under the name Yueyue Talks Technology. “It's too late to say goodbye.” (Reuters Photo)

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   Spokespeople for Alibaba and Ant didn't respond to questions about why Ma hasn't appeared in public. (Reuters Photo)