Number + 月
The noun 二月 (èryuè) means "February" and follows the standard Chinese month-naming pattern of number + 月. All twelve months in Chinese are formed this way: 一月 (January), 二月 (February), 三月 (March), and so on. This system is straightforward and easy to learn.
二月份北方还是很冷的。
Èr yuèfèn běifāng háishì hěn lěng de.
It's still very cold in the north in February.
他打算二月去云南旅行。
Tā dǎsuàn èr yuè qù Yúnnán lǚxíng.
He plans to travel to Yunnan in February.
春节通常在一月或二月。
Chūnjié tōngcháng zài yī yuè huò èr yuè.
The Spring Festival usually falls in January or February.
二月份北方还是很冷的。
Èr yuèfèn běifāng háishì hěn lěng de.
In February, the north is still very cold.
他打算二月去云南旅行。
Tā dǎsuàn èr yuè qù Yúnnán lǚxíng.
He plans to travel to Yunnan in February.
春节通常在一月或二月。
Chūnjié tōngcháng zài yī yuè huò èr yuè.
Spring Festival is usually in January or February.