三人行，必有我师(焉)

成语
形同陌路 to be estranged, to treat one another as strangers
同舟共济 to have common goals/interests (interest as in "conflict of interest," not as in "shared hobbies"); lit. to take the same boat
截然不同 completely dissimilar
( ”pinyin” )

词汇
金, gold; 金牌, gold medal; 现金, cash; 资金, capital (in the financial, not geographical, sense) ( ”pinyin” )
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
为什么两个人却形同陌路, why did the two of them become estranged?
大敌当前他们都在同舟共济, in the face of a worse enemy they share a common interest
他跟我长得一模一样，但他的性格跟我截然不同, he looks exactly like me, but our personalities are completely different
为什么又把金腰带还给我, why are you giving me back the gold sash?
[Fun fact: other than in names, by far the most common use of 金 in Guardian is for 奖金, bonus. RIP Lin Jing.]

Me:
那两个国家地理上很近，但是使用语言截然不同。
她很喜欢金项链。