pinyin: jìng

Chinese phrase: 毕竟 bì jìng - after all
竟然 jìng rán - unexpectedly, to one's surprise

Examples:
境
pinyin: jìng;
Chinese phrase: 国境 guó jìng - national territory
环境 huán jìng - circumstances, situation, environment

镜
pinyin: jìng;
Chinese phrase: 镜子 jìng zǐ - mirror