During the Sino-Russian military exercise, how do soldiers from two low-culture countries communicate?

Even in joint exercises, soldiers from two countries rarely work together in a small unit to complete the task. It is often a cooperation between medium-sized troops from different countries. Naturally, there is no need for personal communication between soldiers at this level, but communication between commanders is enough.

In other words, the important link will not depend on the communication between soldiers, but generally speaking, a simple dialogue manual will be prepared. China soldiers will point to the Chinese word "Hello", and Russian soldiers will see the Russian word "Halasho" next to it.