Background The Song Dynasty is a very special historical period. It has three of the four great inventions. It has several times the taxation of other dynasties. It has a perfect scale of foreign trade and business. It has a very high scale of urbanization. It is about to start to transform... Unfortunately, it caught up with a historically incomprehensible Mongolia. As a result, not only the upgrade process was interrupted, but a country was destroyed. The protagonist Hong Tao is a career that has been reborn three times Veteran. The first two times were in modern times, this time in the Southern Song Dynasty. Does a modern person who does not work hard and does not distinguish between five grains have a chance to survive in the Song Dynasty? Can he continue the success of the previous two time travels and rebirths in the Song Dynasty? This is the story that this book is going to tell, let's see what different ways he will use, not only to keep himself alive, but also to help the small court of the Southern Song Dynasty to carry it through the war that has swept across most of the world. With the cover of Hong Tao, the Southern Song Dynasty is like having a flu vaccine, and can say loudly to the world, let's stop coughing!