Dengtan bijiu 登壇必究 "Necessary investigations at mounting the altar" is a military treatise compiled during the late Ming period 明 (1368-1644) by Wang Minghe 王鳴鶴 (c. 1600). A print from the Wanli reign-period 萬曆 (1573-1619) survives. It has a length of 40 juan long and includes more than 560 illustrations.
The Dengtan bilu is divided into 72 chapters and covers topics like astronomy and astrology, geography, strategic planning, appointment of generals, training troops, reward and punishment, exploring the situation of the enemy, defence, battle tactics, machines in naval warfare, medical care for persons and horses, maritime and river transport, and communication. The particular themes are arranged in chronological order and are in most cases covered by quotations from literary and relevant literature.