Can you enrich this paragraph to about 200 words and correct words and grammars please.

To further my experience, I had an internship in the financial auditing department in Deloitte. I learned the basic applications to the audit system and performing well in the 3-week's time. Attending to the final auditing report, I got valuable deep insides into china's insurance corporate world and analyzing it with team members by applying the knowledge I learn from my degree. I also did two-week work for CDM project investment team of Shanghai Shenhua Holdings Co., Ltd. Working in a teams also developed my diplomacy skills; I communicated well with sometimes difficult customers and built sound relationships with them. The report of Chinese wind energy power generation market I wrote was highly appreciated by the general manager.