Last year, I gave my brother-in-law the laptop I initially used for mining. I bought a 32GB RAM stick and installed it, costing 400 yuan.

When I went back home for the New Year, I found that my brother-in-law was still using that laptop. I told him, if you're going to sell that laptop secondhand, remember to take out the RAM stick and sell it separately. That thing has already increased to 1800 yuan, and it might be more expensive than the laptop itself...