The influence of Sun Tzu on other North Vietnamese military strategists is harder to answer. Certainly many of the key leaders in Hanoi were aware of Sun Tzu and made use of his ideas - Vo Nguyen Giap applied many of these ideas in seeking out weak elements in the enemy's defenses, as did Truong Chinh, whose famous treatise, The Resistance Will Win (1947), cited the ideas of Mao Zedong as a model for the North Vietnamese to follow.