PM & C, is the abbreviation of Project Management & Contractor or Project Management Control. The concept of PM & C is from American military academe.

The philosophical basis of PM & C:
"Engineering Cybernetics", Hsue-shen Tsien. 1954
“Cybernetics, or Control and Communication in the Animal and Machine”, N.Wiene.1948

Inherit the glorious tradition from Dr. Tsien & missile troop, Bhyren LP introduce macro-system control theory into PM & C.

A sample Gantt Chart: