
Barbossa had the charts when they arrived in Davy Jones' Locker and joined Jack Sparrow on the Black Pearl. While sailing to the Farthest Gate, the crew used the navigational charts throughout their journey, leading them to World's End and beyond.

Although Feng didn't want Jack Sparrow return from the Land of the Dead, Will made a deal with Feng that procured Barbossa's crew the charts they need for their quest.

After Will Turner attempted to steal them, Feng used the charts to personally accuse Barbossa of stealing them. To help the surviving members of Jack Sparrow's crew save Jack from Davy Jones' Locker, Captain Barbossa helps them by recovering the map. The renowned Pirate Lord of Singapore, Sao Feng holds one of the great keys to a true pirate mystery: the charts that shows the way to World's End. The struggle for eternal life is symbolized by a tug of war between a skeleton and an angel, which is aligned with the the symbol of the Fountain itself: the Chalices. If lined up correctly, the map to the Fountain of Youth would be found. However, as many times as the Mao Kun Map has been used, the dates and distances can change and mislead the traveler who uses the map unwisely.

Indeed, this map was prized above all other charts, with the directions to many marvelous places. The Mao Kun Map was believed to have been painted on washi-handmade Japanese rice paper.
