平州 / Pingzhou (Warring States)
平州 / Pingzhou appears in 《资治通鉴·周纪》38丨搞兼职的张仪不一般 as a place 秦国 takes from 魏国 after 张仪 becomes Wei chief minister and urges Wei to lead the lords in serving Qin. When 魏惠王 / 梁惠王 refuses, Qin attacks and takes 曲沃 and Pingzhou.
The source gives Pingzhou only as part of this military notice, so the page is source-scoped. Its wiki value is to extend 秦国东进压力 from the earlier Jiaoyi/Quwo/Shangjun sequence into the next Zhang Yi-in-Wei episode.