Eastern Wu was one of the Three Kingdoms, existing from 229 to 280.

He went to China to learn Wu language.

This cloth was dyed with ancient indigo from Wu.

The history of Wu and Yue is a part of ancient Chinese history.

His body showed a rejection reaction to the transplanted organ.

She overreacted to his words.

Nuclear reactions are used for mass production of energy.

This chemical reaction is very dangerous.

His single word triggered a chain reaction, and everything changed.

I started a new job the month before last.