At that time, Bo Xilai was wrecking havoc by promoting cultural revolution like movement, all so he could get a seat at the top. I'm glad they get rid of him, otherwise he and his faction could be a thorn on Xi's gov, just like Jiang Zemin faction to Hu and Wen. I'm all for check and balance, but Bo Xilai and Jiang Zemin were not providing check and balance, but obstacle to reform.