I have had this experience myself, when I graduated from high school. I bought a lot of books because I didn't study hard, and then actually selected some books suitable for children to donate to children in mountainous areas, but I don't have any contact information. Then I looked for the address directly on Baidu, and I found a primary school in Tengchong County, Yunnan Province. Then I found out that the teacher's contact information was his WeChat contact information, and then I added a teacher. Unfortunately, when the teacher contacted me at first, he said that he had taught there, not a teacher, but he could help me contact him. Then a few days later, he told me that he couldn't find the contact information of the original principal. So I'm sorry, I don't know the address, and I don't know where to send the packaged things.
But this incident also told me that the experience is that some things on the Internet are really unbelievable. So I want to recommend some books that I think are more reliable and can give your donated books to children. One is the Contact Hope Project, which is well-known in the society and focuses on helping poor children, so its fraud should be very small. You just need to find official website. There is also a female star in June and July, which I like very much. She runs a charity project. Her name is Jiang and she has a crawler. He teaches in a primary school in Guangxi every year, and then if you can get in touch with reptiles, you can ask them to help you bring books to the children. If you want specific contact information, I have it. Because I was going to join that club, but I don't have much time now, so I can't teach.