The US Congress is a bicameral legislature.
a bicameral legislature
The upper house is usually the smaller branch of a bicameral legislature
We have no objection to the Western countries doing it that way, but we on the Chinese mainland do not have such elections, nor do we separate the three powers or have a bicameral legislature.
It is no more than a system of multiparty elections, separation of judicial, executive and legislative powers and a bicameral legislature.