Ask PricewaterhouseCoopers and Yongan for information such as resume delivery location or email address.

I only know Puhua's. You said there was a Chinese webpage. Open it and it's all in English. That website is the home page of the company, and even internal employees open it in the same mode.

In fact, Puhua's articles of association clearly stipulate that employees with senior partners and above are recommended to employ people. Since your friend asked you to vote, you can ask him for an email address of the personnel department of Puhua.