阶梯倍投方法简介：The Liao Dynasty collects nearly 5 million taels of silver a year, and a canal can collect 2.5 million taels. It will not be a problem to add more official roads and passes in each province to plug the gap in the Liao salary.
The Liao Dynasty collects nearly 5 million taels of silver a year, and a canal can collect 2.5 million taels. It will not be a problem to add more official roads and passes in each province to plug the gap in the Liao salary.
