Thank you for contacting the UK Visas and Immigration International enquiryservice.In response to your enquiry, we regret to inform you that you cannot goback and change any information on your online application once you havesubmitted it online. If you still have not paid for your application fee,you may consider to raise a new application by clicking on "apply formyself", then, complete your new application again. If you have already paid for your application fee, you may consider torequest for the refund on this application fee by clicking on "viewpayment", then, proceed your refund.If you would like to attend your appointment in China, on the first pay ofyour online application, you will need to choose location as China.You can't go to our visa application centre without an appointment.For any further details, or should you need to contact us again pleaserefer to our website at https://ukvi-international.faq-help.com/, selectappropriate country, click next and then select “E-Mail form and completeas instructed. We will aim to come back to you within 1 day.