C409 Send a Letter of Challenge!

Chu Yun was the public relations director of Yunyue Investment.

However, he was basically clueless about the company's business. Not to mention that he did not know anything about it, but he knew about the core business data and business secrets. He basically didn't know anything about it.

Sometimes, even Xue Chaoqing was puzzled. Chu Yun, as the biggest shareholder