Cancer. Constellations were introduced into China from the west, and the Gregorian calendar is an international calendar, so constellations are calculated according to the Gregorian calendar. Cancer is the fourth house of the zodiac, located in the east of Gemini and the west of Leo. The time interval is from June 22 to July 22, and July 9 is in this time period, so July 9 is Cancer.
Gemini, the third house of the zodiac, was born on May 21-June 21; Leo is the fifth house of the zodiac, and the date of birth is from July 23rd to August 22nd.