I want to know the answer to the following question:
Who was the second Phagmodru ruler?
All the background I'm provided with is that "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.". Is that enough to answer the question?
Answer: no