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.