牵强附会

牽強附會
qiānqiǎngfùhuì
to make an irrelevant comparison or interpretation (idiom)

CEDICT

to make a far-fetched analogy; to connect unrelated things together

Wiktionary

硬把不相干的事物凑合在一起，勉强比附。

重編國語辭典

把没有关联的事情勉强拉扯到一起

維基詞典

Entry Composition

1 牵强 qiānqiǎng
  1. far-fetched
  2. implausible (chain of reasoning)
2 附会 fùhuì to add parallels and interpretations (to a story etc); to develop and embellish; to interpret (often in a strained manner)