To improve the Approach to Canton, I suggest that two submerged training walls be built at the left side of Canton Estuary above Lingting Island--one from the shore to the head of the Kongsu Bank, and another from the end of the same bank to the head of the Lingting Bank. The first training wall will be 3 to 4 feet under water just at the same level of the bank. The second wall will be from 4 feet at one end to 16 feet at the other, which are the levels of the respective banks which it connects. (See (1) (3) Map XI.) It will cross a channel of 24 feet deep between them. These two walls together with the four-foot Kongsu Bank will act as one continuous wall and will direct the undercurrent which now runs between the left shore and Lingting Bank, into the middle part of the estuary, thus cutting a channel between the bar and the bank of the same name to meet the deep water on the west side of Lingting Island. On the right side of the Canton Estuary, a training wall should be built from the lower part of Fraser Bank in a southeasterly direction across the 24-foot channel into the Lingting Bar ending at the east edge of that bar. (See (2) Map XI.) Thus, with these submerged walls on both sides of the estuary to confine the undercurrent in the middle, a very deep channel can be formed to connect with the Fumen Entrance at one end and the Lingting trough at the other both of which are about 50 feet deep so that a thoroughfare from deep sea right up to the Second Bar of the Pearl River will be created. These submerged sea walls taken together are about 8 miles in length and will be built only 6 to 12 feet from the bottom of the sea. The expenses will not be much while the acceleration of the natural reclamation process will be very great. Thus, the lands that will be formed on both sides by these walls will far more than repay the expenses of the work of building these walls. [Illustration: MAP XI] To regulate the Approach of Canton, in that part of the Pearl River from the Fumen Entrance to Whampoa, I suggest that the East River Estuaries be concentrated in a single outlet by using the uppermost channel which joins the Pearl River at the lower point of Davids Island. The other outlets of the East River, which joins the Pearl River below the Second Bar, should be closed up by dams built to the height of the normal water level so as to permit them to serve as flood channels in the rainy season. By concentrating the whole volume of water of the East River above the Second Bar, a stronger current could be obtained to flush the upper part of this section of the river. [Illustration: MAP XII]