I want to know the answer to the following question:
Who was involved in the Gapsin Coup?
All the background I'm provided with is that "Japanese Prime Minister Itō Hirobumi and Li Hongzhang signed the Convention of Tientsin, an agreement to withdraw troops simultaneously, but the First Sino-Japanese War of 1895 was a military humiliation.". Is that enough to answer the question?
Answer: no