Hebei
The abbreviated name of Hebei is Ji (冀), since there is another province that also has the syllable "He" (河) in it, Henan (河南). Due to Hebei completely surrounding Beijing and Tianjin, the municipalities of Beijing and Tianjin and the province of Hebei are often lumped together and called Jingjinji, with the "Jing" being Beijing, the "Jin" being Tianjin, and the "Ji" being the abbreviation of Hebei.