The need for large deposits is the most basic financial explanation. And there must be proof of running accounts for about half a year. That is, money can't be deposited at once, but must be deposited little by little, and there must be a record of access. You can't just deposit it or take it ~ ~ This is also to prove that your money is normal working capital, not specially for this trip. If you don't prepare in advance, you will definitely be refused a visa.
In addition, since your mother has a real estate, see if you can add your name to the real estate, so that you have an additional asset certificate, which will make you more likely to get a visa. If you still live with your mother and have a household registration, you basically don't need to submit any proof of relationship. Because all the household registration books, ID cards, passports and other materials should be copied, there is enough information to prove the relationship between your. You will also fill in the relationship between the main family members when you apply for further study.
Then I'll tell you the actual situation ~ Is your mother retired now? If you don't formally retire, you have to ask her to issue a work certificate or even a copy of the hospital's business license for her to use as one of the application materials. If she has retired, it will be more difficult to get a visa. Because according to your mother's current situation, the child is independent, divorced and retired, and she still has enough labor in western countries. So all this will take into account whether your mother has a tendency to smuggle immigrants. They're so strict, they're worried about this. You're not going with the group, but by yourself. In addition, for you, young laborers who are unmarried and have no savings but have the ability to work should be strictly examined, because many of these people are illegal immigrants. They don't care if you really want to travel, as long as the people who go to the interview are not satisfied with your application conditions, they will be refused a visa. Although the refusal will give you reasons, it will also become the key examination condition for the next application. If you want to go, your company must provide you with a copy of your business license and work certificate.
If overseas relatives and friends can send invitations and use their domestic credit as a guarantee, the chances of successful application will be greater, and it is useless to take pictures, only the invitation letter is useful. But everything is not absolute, because conversely, that is, you have people who can meet you, so the probability of illegal immigration will increase. In short, applying for a visa anywhere in Europe is a hassle. You'd better consult some travel companies about the materials to be submitted, and then make preparations in advance. In a word, the more places to ensure you and your mother, the greater your chances of success. Schengen is more difficult to sign. According to your current situation, I suggest you try to start from Belgium. This is my personal experience and I can only give you a reference.