Drainage began to be drained to prepare for squeezing, dredging and replacement. Some areas with better soil quality at the bottom of the pond began to fill and heighten.
Start pumping and drainage, in preparation for siltation, desilting and filling construction, some of the better soil at the bottom of the pond began to fill and high construction.
Water pumping and drainage were started to prepare for the construction of silt extrusion and dredging and replacement. Filling and heightening construction was started in some areas with better soil quality at the bottom of the pond<br>