expression
in such a situation; amidst that; therein
Used to refer back to a previously described situation, often introducing a contrast or continuation. Functions as a conjunctive phrase.
See also: その中
そんな中、彼は一人で静かに本を読んでいた。
In the midst of that, he was quietly reading a book by himself.
会議は混乱していた。そんな中、彼女が突然立ち上がった。
The meeting was in chaos. In the middle of that, she suddenly stood up.