I graduated from the University of Waterloo with a master's degree in science (major in physics) and an honours bachelor's degree in science (major in physics), and I got another honours bachelor's degree in science in China.
So definitely, I can tutor in both English and Chinese (Mandarin)!
As a pre-international student, I understand how struggling that study math and science with a second language can be. I believe that I can help students whose mother tongue is Chinese to learn mathematics and science better under the English education system.