First of all, you are from China. It doesn't matter whether English is good or not, but Chinese must be good. Jewelry design has nothing to do with English.

There seems to be no secondary school or junior college. I know Shenzhen Institute of Technology has this major.

College Introduction The College of Art and Design, formerly known as the Department of Arts and Crafts, was founded in 1993 and is the earliest department in shenzhen polytechnic. Now there are environmental art design, fashion design, advertising design, industrial design, jewelry design, exhibition design, image design, decorative art design and other majors. , basically realized the docking with relevant industrial chains in Shenzhen. At present, there are about 1. 7 million students in the college, the practice teaching base in the school is close to 1 10,000 ㎡, and there are more than 1. 6 million sets of advanced teaching instruments and equipment, with a total value of nearly 20 million yuan, including nearly 4 million yuan invested by enterprises.

You can refer to official website, shenzhen polytechnic-school profile-Specialty Setting-Art and Design College.

I hope it helps you.