She¡¯s best known as the ¡°queen of shell companies,¡± a financier who briefly became Hong Kong¡¯s richest woman by striking deals in some of the wildest corners of the city¡¯s stock market.

Now Pollyanna Chu has a new role: investment banker for embattled China Evergrande Group billionaire Hui Ka Yan.

Chu¡¯s Kingston Securities was the sole manager of two share sales last month by Evergrande¡¯s electric vehicle unit, helping the company raise more than $400 million despite a liquidity crisis that drove down its stock 90% this year. Kingston also likely played a role in Hui¡¯s sale of a $344 million personal stake in Evergrande last week, according to local media and clearing system data compiled by Bloomberg.