Tianjin Submerged Courtyard Map

Quick answer：

The 'Tianjin Submerged Courtyard Map' likely refers to a visual representation or a map depicting the submerged courtyards in Tianjin, China. These courtyards are part of the traditional Chinese architectural heritage, which have been submerged due to urban development and changes in water levels. The map would show the layout and locations of these courtyards, often in a historical or cultural context.