Is it okay to visit relatives abroad since we are sisters? What is the probability

Yes, and as long as you don’t drag your family to him, it shouldn’t be difficult to sign.

Ask him to send an invitation letter, as well as some proof of his identity, such as identity, workplace, income, etc.

Then you prepare your information, which is also your identity and marital status. , workplace, income, savings, etc. When you start to apply for these, you can go to the official website to download the form, and it will also clearly state what materials are required. Prepare the materials carefully according to the requirements, and don’t let the visa officer think you are It’s OK if you have a tendency to immigrate.