Query: Who was the second Phagmodru ruler?
Context: According to Chen, the Ming officer of Hezhou (modern day Linxia) informed the Hongwu Emperor that the general situation in Dbus and Gtsang "was under control," and so he suggested to the emperor that he offer the second Phagmodru ruler, Jamyang Shakya Gyaltsen, an official title. According to the Records of the Founding Emperor, the Hongwu Emperor issued an edict granting the title "Initiation State Master" to Sagya Gyaincain, while the latter sent envoys to the Ming court to hand over his jade seal of authority along with tribute of colored silk and satin, statues of the Buddha, Buddhist scriptures, and sarira.