In Nov, 2011, I spent three weeks looking for materials and resources about how the bell works. By using the twelve-tone equal temperament, I started my experiment within control variate method.

Switching the length and metal, I finally done that within about 8 weeks on my own.

 

During 2014 in high school, I began to know how to cooperate with others. I started

doing research, assigning sections and solving conflicts with each other.

Investigating the sewage treatment station in Shanghai, we collected several polluted water samples, which differed in concentration. Through the same method as I used in middle school, we finally recorded how effectively the luminescent worked in detecting pollution.