Thanks to @fishkiller Mr. Liu for the invitation. This time, I mainly shared some recent observations and thoughts on Bitcoin: such as security budget, transaction fees, developer situation, Bitcoin Core, OP_RETURN, and quantum computing. Actually, there’s quite a lot I wanted to talk about, but I’m not great at speaking, so it came out a bit messy (luckily, Mr. Liu did a great job editing). If you want to learn more, I recommend checking out the information sources in the original tweet.