六码期期必中法

简介：Without Zhang Jiayu, although he could have created the Mandarin Duck Formation himself, he would not have the confidence he has now. He could only rely on new books on Ji Xiao, military training records, and some analysis and restoration in later generations. It was far less effective than Zhang Jiayu's visits to veterans in Guangdong and on-the-spot investigations. The truth - Zhang Jiayu appeared at the perfect time.