Hello, you can go to the stall near the stairs on the left at the entrance of Hozoin in Shanghai Old Street, or there is a stall selling magnifying glasses and flashlights at the entrance of the stall on the fourth floor on Saturday and Sunday. Shanghai Yunzhou Antique City also has related booths. General 10 times magnifying glass 10- 15 yuan, better 30-35 yuan, imported 100 yuan. Strong flashlight is generally around 30 yuan, the better one is around 50-70 yuan, and the imported one is around 100 yuan. There is also a photoelectric mirror that combines a flashlight and a magnifying glass. 10-20 times is around 30-50, 40 times is around 60 yuan, and the better one is around 100 yuan. Of course, you get what you pay for, and the specific price can be discussed. You can choose how many times you need a magnifying glass. (Personal opinion only, for reference only)