The visa for studying in the United States expires in May, and I don't want to return to China. I want to travel directly to Canada.

Once you leave the United States, you must update your return date after the expiration date. There are three options for renewal:

First, I went back to China to renew my contract, and took the materials to China CITIC Bank for face-to-face signing. Disadvantages: it is more troublesome to bear a high round-trip air ticket. Second: Send the passport and other materials to friends or parents in China by express delivery and entrust them to deliver them on their behalf. Disadvantages: it takes a long time, and without a passport, it will affect the travel to Canada. Thirdly, it is more convenient and takes the least time to renew the contract in Canada. Disadvantages: The following risks must be considered: 1 If rejected, you have to go back to China to renew it; If you are checked, you must stay in Canada until the visa result comes down. Canadian tourist visa requires you to check with the embassy in official website, which is the most authoritative. Considering your actual situation, a third country visa is ideal.