Which express delivery or logistics is cheaper to send large packages from Chengdu to Shandong?

I was worried when I graduated last year, but every year when I graduated, the post office and the courier would come to school, so I don't have to worry now. I used ordinary mail, which was the cheapest. I forgot the price. I was traveling in Shandong province, and everything cost more than 60 yuan, of which books were the heaviest, and my books accounted for 90 Jin. I suggest you throw away the books you can sell and deal with them in advance, hehe) Anyway, they are not priced according to Taobao, and they are quite cheap. I have also used Shentong and Dayun, but they are not as cheap as ordinary mail. They are faster than time. I remember that Shentong used the reserve price of less than 30 kg at that time, and the overweight was extra money. I forgot the exact figures. If you are not in a hurry to get your luggage, I suggest you choose surface mail, which is the most affordable. In addition, the big package is not delivered to your home, even if your home is within the delivery range, the post office and express delivery will not deliver it, so you can only pick it up yourself. This is my experience of delivering luggage after graduation. Although it's not from Chengdu, I think it should be similar. I hope I can help you. Don't worry! Ha ha!