Cover letter for PwC

I want to apply for a position in Big 4 CPAs firm. One of the Big 4 is Pwc and audit is the job I feel like to look for. I know it’s a not easy thing to join in a cpa firm but I won’t give up the chance.

I have finished the online application of PwC and my CV has been prepared and revised (用心的). The next thing facing is to upload a tailored cover letter. To write a cover letter, I did some research in their website and found out the job description and requirement as follows: