PwC has lost five Chinese clients in May alone, adding to over a dozen firms it stopped auditing in the last two years. This comes as PwC faces intense scrutiny and a potential record fine of at least 1 billion yuan ($138 million) from Chinese authorities over its auditing role for China Evergrande. Evergrande's main onshore unit has been accused of overstating its revenue by nearly $78 billion in the two years through 2020. The Ministry of Finance in China may announce the penalties this week, which could include halting PwC's operations in the country. Clients are reconsidering PwC's future in China amid leadership changes and potential penalties. The fine could represent almost 15% of PwC's total revenue for the year. The investigation is part of one of the biggest financial fraud probes in history, involving the Big Four firm's audit of Evergrande.