Wang Qianlai, a modern boy, accidentally discovered that he could freely travel between Lao Li's era and the modern world, so he brought modern equipment to Lao Li, in exchange for Lao Li giving him oceans and gold to buy better equipment and materials. When heavy weapons such as planes, cannons and even missiles stopped in front of Lao Li, Lao Li was overjoyed and wiped out the invading enemies in one fell swoop.
