Feng Lun said, there are three things in life that are unpredictable: the first is how much money you will make, missing out on Bitcoin that could have multiplied ten thousand times, missing out on Ethereum during its ICO, missing NVIDIA and Tesla, missing out on ByteDance's early options... There are always many opportunities you cannot seize. The second is how much pain and happiness there will be, going into a blind date aiming for happiness, getting married, and ending up with a divorce rate that is terrifyingly high, resulting in pain. The third is how one will die, as there are many accidental deaths every day, and only when someone dies unexpectedly will others say, "Died young." These three unpredictable things are respectively risk, joy and sorrow, and life and death — actually, the ultimate questions of life.