After three years (faster than China 1 year), you can get university of east london's undergraduate diploma (you don't have to buy it, you have to learn it), which is recognized by Commonwealth countries all over the world. The course is conducted at Linton University in Kuala Lumpur, Malaysia, and the total cost (tuition, accommodation, living expenses and round-trip air tickets) for three years is about RMB 220,000.
You can also apply directly to go to school in Britain, but the cost is 3-4 times higher. In addition, if you study 1 year, you can transfer your credits to universities in Commonwealth countries such as Australia and New Zealand.
Going to Linden University is not only short distance, low cost, and the dormitory environment is not as good as that of several universities in China, but also the English level required for admission is "feasible", and it is not necessary to take IELTS and TOEFL in China first. You can also find that the above two universities are recognized by China by logging in to the Education Foreign Supervision Information Network of the Ministry of Education of China.
After graduating from college, I can help you find a job in Singapore, and the way out will be broader.
You just graduated from senior two. Of course, you can't go to preparatory school, and there is no reason to study abroad in senior three, because it's not worth spending too much money.
I suggest you be patient after finishing senior three in China. As long as you get your high school diploma and school report card, you can apply for the undergraduate course of university of east london at Linden University even if you don't take the college entrance examination.