Yuan Shang and Yuan Xi fled to Liaodong to seek shelter under the warlord Gongsun Kang in 207 .
Gongsun Kang killed them instead and sent their heads to Cao Cao .
Yuan Shang and Yuan Xi fled to Liaodong to seek shelter under the warlord Gongsun Kang in 207 , but Gongsun killed them instead and sent their heads to Cao Cao .