Correct
七七事变
/ qī qī shìbiàn /
Strokes
Definition
Marco Polo Bridge Incident of 7th July 1937, regarded as the beginning of the Second Sino-Japanese War 抗日战争[kàng rì zhàn zhēng]
Example
As a Noun
July 7 Incident of 1937 ［an incident by Japanese imperialists, which marked the beginning of the nationwide War of Resistance Against Japanese Aggression］