without careful preparation in advance, opportunities will be useless. In the field of observation, opportunity only favors the prepared mind. God only gives freedom to those who love it and are ready to defend it. A person will encounter many opportunities in his life, but opportunities only favor a prepared mind. It is better to plan ahead for a rainy day than to dig a well when you are thirsty. If you are prepared psychologically, all preparations have been completed. Society is like a ship, and everyone should be prepared to steer. If you are prepared, you will be in danger. If the foot is not strong, the trace is not far, and if the front is not sharp, the cut is not deep. If you lather well, your face is half shaved. If you can know it before, you are not afraid of it. And Xu Weizhi's picture. Build like a hundred years without fighting, and prepare like a war tomorrow. Everything is established in advance, and it is abolished if it is not foreseen.