Hong kong. Mingling with power brokers at the Chinese Communist Party's centenary celebrations in 2021, ​a beaming Hui Ka Yan betrayed no sign of the pressure mounting on his property company, China Evergrande Group, the world's most-indebted developer.

Hui, ‌with a full head of black hair, looked relaxed in a navy-blue suit and open-necked shirt as he stood on a podium overlooking the festivities in Tiananmen Square, an invitation many considered an official show of support for the billionaire businessman.

Five years later, on Thursday, a grey-haired Hui, once Asia's richest man, wore a navy-blue collared shirt and was flanked by two officers as a ​court in the southern city of Shenzhen read out his sentence of life in prison.

Rags to riches to life in prison

Evergrande, the company he founded that ​grew to be China's premier developer, defaulted on its overseas debts months after Hui stood at the Communist Party celebrations in ⁠Beijing and later and went into liquidation, its collapse symbolising a property crisis that continues to weigh on the world's second-biggest economy.