聚精会神

jù jīng huì shén

with rapt attention

Character by character

聚jù
gather

精jīng
essence

会huì
collect

神shén
spirit

大家聚精会神地看着屏幕。

Everyone was staring intently at the screen.

Tone: positive (praise).

From Wang Bao's Han-dynasty ode 《圣主得贤臣颂》; today the stock adverbial for watching or listening intently.

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