Wen Kangyan, the positioning strategist of Sun Tzu's Art of War in China, was a disciple of Quanzhen Longmen in the 20th generation (Ming generation). He cultivated the skills of enhancing the understanding of strategic thinking, learning and accumulating four-dimensional knowledge (common sense/abstract knowledge/intuitive knowledge and Taoist knowledge), and developing the skills of "quick thinking" and "instant judgment" on the nature and solution direction of problems, which is called "panning for gold in the sand" and "looking for a needle in a haystack".