Introduction: Liang Jincang was a young man who lost his father and had many younger siblings. It was very difficult for the orphans and widows to survive. In that era of material scarcity and backward thinking, if you want to become an omnipotent generalist, you have to do it all the time. It is actually very simple to be able to grasp the progress of the times, and to be able to calmly plan the development of the next few years or decades. As long as you get a memory of successful people in future generations by chance, your life will be on the hook.