孙观 / Sun Guan (late Han)
孙观 / Sun Guan (late Han) enters the wiki through Hanji 1026 as one of the local armed actors whom 张霸 persuades to submit to 曹操 after 吕布’s defeat. The source later connects the Taishan-area troops to pressure on 袁谭 in 青州.
Sun Guan’s source role is therefore not only surrender but strategic depth. Bringing local force leaders into Cao Cao’s orbit helps turn the eastern settlement into an asset before the 袁绍 and 官渡 horizon.