the thing of it

colloquial idiomatic

(idiomatic, colloquial) The important point to consider.

Japanese Meaning

肝要な点 / 最も重要な点 / 要点

The thing of it is that we don't have enough time to complete the report properly.

肝心なのは、私たちにレポートをきちんと仕上げる十分な時間がないということだ。

Sense（1）

(idiomatic, colloquial) The important point to consider.

But the thing of it is, when to begin