《明史·列传·卷十一》
吴元年攻克杭州后，方国珍据境自如，派间谍借向朱元璋进献之名，侦察对方力量，又屡次通好于扩廓帖木儿及陈友谅，企图互为掎角。
吴元年克杭州。国珍据境自如，遣间谍假贡献名觇胜负，又数通好于扩廓帖木儿及陈友定，图为掎角。
After Hangzhou was conquered in the first year of the Wu Dynasty, Fang Guozhen stayed put and sent spies under the pretense of sending offerings to Zhu Yuanzhang to try to investigate the other party's power. He also repeatedly established friendly relations with Kuoketuo Timur and Chen Youliang in an attempt to support and respond to each other.