This letter recommends Yuan Yi Chen for an internship position. The writer has known Yuan Yi for over a year as her research assistant. Yuan Yi is described as brilliant, creative, highly motivated, hard-working, and responsible. She is able to independently propose research ideas and make significant progress on schedule. Yuan Yi also has outstanding quantitative and programming skills to estimate complex econometric models. The writer strongly recommends Yuan Yi for the internship opportunity and believes she will contribute greatly to the company.