The Ming Sect has always been a family of rebels.
Their rebellion setup was quite comprehensive, including strategists, scouts, and quartermasters.
Of course, these roles weren't called by these names within the Ming Sect. For example, strategists were known as "White Paper", and scouts as "Straw Shoes"... but their functions were clearly defined, and they were highly skilled in their trades.
After taking charge, Yang Ge, based on the intelligence collected and organized by Gu Tong, began performing precise surgical strikes on the Dongying ronin who had already landed.
The process wasn't particularly noteworthy; the Dongying ronin who initially landed along the Southeastern coast were a disorganized bunch, numbering from a few dozen to at most several hundred. They aimlessly looted towns and villages along the coast, not daring to touch even slightly more populous counties.
With accurate intelligence, cleaning up these rabble by Yang Ge was all too easy.