Jianzhou has perhaps the strongest start of the three Jurchen tribes, as it has more starting development than its direct competitors, 海西 and 野人. However, Jianzhou's expansion opportunities are also more limited than the other tribes, as 大明 is unassailable in the early game, and 朝鲜 often allies with them, leaving only the other Jurchen tribes as potential targets. The Girin node is very poor and so it is generally not worth building Light Ships to Protect Trade in this node, though Privateering in Hanzong can be profitable until Jianzhou can reasonably control the Beijing node.
Jianzhou is a Tengri nation and is syncretic with Confucian at game start. Maintaining Confucian syncretism is recommended for the early game as nearly all territory nearby is either Tengri or Confucian already.
Some patience may prove valuable for a player at the very beginning of the game. 海西 and 野人 will be the player's rivals in nearly all Jianzhou starts. One of 科尔沁 or 朝鲜 will often rival the player as well. This makes the list of potential allies quite short; in general, the strongest defensive option is 瓦剌, and an alliance with the 瓦剌 should be obtained if at all possible. 朝鲜 is also a decent defensive alliance if they have not rivaled Jianzhou, but due to their borders, they will not accept a Call to Arms for territory promises as they cannot core land in 海西 or 野人. 科尔沁 may be useful if the player intends to go to war with the intent of calling them in for territory, and then betraying them in the peace deal; once 海西 or 野人 lose territory, 科尔沁 will nearly always select Jianzhou as its next rival anyways.
Build up Jianzhou's army to the force limit, with Cavalry if the treasury can afford it, and wait on the borders of 海西 or 野人. Thanks to the Tribal Feud CB, a war will start soon. Once this happens, the Jianzhou player should declare war and try their best to 'steal' as much territory from the losing party as possible. Alternatively, the player can begin a war by calling in 科尔沁 with promises of territory, maneuver as to force 科尔沁's army to do most of the fighting, and then give them no territory in the peace deal.
In general, it is best to annex as much territory as possible. Even taking slightly over 100% Overextension is acceptable, because due to the Razing functionality for Steppe Hordes, the Development in razed provinces will drop and by doing so lower Overextension as well. Razing will often provide almost enough Administrative Points to core the newly razed province, and will often grant Diplomatic and Military Points as well. If the player fully annexed the target nation, at their option they may release them as a vassal, though this is not recommended for 海西 and 野人 due to these nations containing provinces needed to form 满洲.
Uniting the Jurchen Tribes
After destroying or severely reducing one of Jianzhou's neighboring tribes, 科尔沁 will likely rival the player, so the player may choose to wait to see if 科尔沁 and the remaining Jurchen tribe go to war, while consolidating their new gains. If Jianzhou fully annexed 野人, 布里亚特 is an excellent new target if available due to their gold mine.
朝鲜 or 大明 should generally be left for after forming 满洲, unless 朝鲜 is caught without any alliances whatsoever. AI nations should no longer ally if they could be called into an ongoing war, so the player should now be safe from 朝鲜 reallying with 大明, or anyone else, while the war is in progress. If Ming decides to issue a warning to Jianzhou, be aware that they will only be called in if the Jianzhou player attacks a nation that also borders 大明, so 野人 or 布里亚特 may still be safely attacked (unless national borders have changed drastically).
Once two nations in the area have been annexed by the player, the remaining two nations will be easy targets for the strong Jianzhou army as they will always have rivaled each other. The player should carefully check alliances before declaring war, however, as an unexpected alliance with 瓦剌 or 朝鲜 can make the war unexpectedly brutal.
Once the local area has been annexed, generally up to 蒙古 in the west and 大明/ 朝鲜 in the south, the player can choose to form 满洲. Now that the state religion of 满洲 remains Tengri, there are no longer any downsides to taking this decision.
Please see the 满洲 article for further strategy.
- Blind_BeN × AF：https://www.bilibili.com/video/av38982815