Yesterday, I had nothing to do on the plane and finally watched Jackie Chan and Tony Leung Ka fai's "Catch the Wind and Shadow". I rate it as Jackie Chan's best film of the past 10 years. Two old men, one 71 and one 67, can still act so fiercely in a fight, even if there is no emotional bonus point, it is worth a toast. It's interesting that the robbers inside don't steal fiat currency or gold, but specialize in cryptocurrency. It shows that even the robbers know the superior physical properties of cryptocurrency 。 However, this martial arts game is exciting, and some of the plot may not stand up to scrutiny, especially the cryptocurrency part. For example, when Ximeng recited the mnemonic words at the end, Lao San only received 11 mnemonic words and couldn't hear the 12th one clearly, so he got stuck here. To be honest, let alone a hacker genius. Even if you give me 11 mnemonic words, I am skilled at typing them one by one and can crack them for you in a day 。 According to Bitcoin BIP-39, the 12th word is a checksum and must comply with a certain rule. So, when trying the 12th word, it doesn't need to be 2048 times. In fact, if you write a program to run brute force, even if Ximeng stutters at the sixth word, it's not a big deal. Roughly estimate, if it is a household device exhaustive list of mnemonic words: Given 7, exhaustively list the remaining 5:<10 years Given 8, exhaustively list the remaining 4:<1 week Given 9, exhaustively list the remaining 3:<5 minutes Given 10, exhaustively list the remaining 2: instantaneous Given 11, exhaustively list the remaining 1: instantaneous Considering that the third party can issue a "global pursuit wanted notice" (somewhat mediocre) ）， Then he should be able to handle a lot of graphics cards and computing power. With just 7 words, his words were cracked in just a few days; Six words is a bit extreme, if you are willing to do supercomputing, there will be a play in one year; Unless there are only 5 words, the current level of human computing power cannot save it. The revelation from this is that if you leak more than half of the mnemonic words, you have basically lost your money. Of course, when it comes to watching movies, if you're serious, you'll lose. Of course, the flaws do not overshadow the strengths, and the box office of the film is good. I am also interested in making a second installment. I just don't know how to round the second part, the hacker genius couldn't crack the 12th mnemonic word. Finally, I also hope Jackie Chan can play for a few more years 。