Some data are not clear. If you have two or three military commanders with high IQ, I strongly suggest that you build a strategic office. Look at several nearby cities: Jiangling, Jiangxia and Caisang (it is not recommended to go far, but you will be more loyal when you see them). Which city's military commanders are close to Cao Cao (Cao Shi family, Xiahou family, Chu Xu, Dian Wei and other military commanders who have been following Cao Cao in history), you will make a fierce rumor and drop it below 90 (to prevent loyalty from being added, it is best to be below 85). If these city guards have high intelligence and bad rumors, then continue to block the port, let his attack forces enter the port, and then gossip about the port. The easiest person to board the ship after rumors about your port (boarding time is 0 days).
In a word, gossip is the best magic weapon to be more intelligent and less powerful.
Zhao Fan of Guiyang, who visited the humble place, found Sean and was unified (Sean was a senior military commander with intelligence and no force in the early days). Use gossip.