Hello and welcome Qian.
I hope that we can be supportive to you. I would recommend that you take everything just one moment at a time right now. The diagnosis of autism at such a young age is just the beginning, and you don’t have to figure everything out right in this moment.
You will find that most of us here regard autism as a lifelong condition, and so there will be no cure. Rather, it will be about learning how your child’s mind works, and just like any other parent, figuring out how you can set them up for success in the world.
I hope you stick around and read the experiences that many of us have shared here on the forum. It could be particularly relevant for you to read about some of our experiences with ABA therapy and other childhood treatments that people have gone through. Most of us are adults with autism here, but you’ll be able to learn so much about what our experience in the world has been. This can prepare you for being a parent to your autistic child. There are a good amount of parents here, too, so I think you will be in good company, and I hope that you will learn a lot.