Dragon Rising: Guide to China's Modern Infantry Squads

This is the video that made me support you here when I saw it on YouTube. You said that there are three line squads per platoon. Is it like a US Marine Battalion that has a weapons company that attaches medium machine guns (type 80) to the line platoons or something different? Can you explain the Company to Brigade? If not here if it’s completed than in a video? Also another video idea would be North Korean platoon/squad circa 2020. Thanks and keep up the great work