Yes, you can, but it is best to make such plans in advance so that you can ensure that your visa will be valid for enough time to allow travel. If you have any question regarding this matter, please consult us.
If you are coming for a long-term internship (3 months or more) a visa extension will be required. In this case you will have to apply for a visa extension or change the type of visa to a working visa after you arrive. There are visa agencies that can assist you with this and the
Look on the website of the Chinese embassy nearest to you to learn about the requirements for a Chinese visa in your home country. SII will provide you with an invitation letter from your host company that may be required for the visa application process. The Chinese authorities are very strict about visa issues, therefore,