Month + 上旬
上旬 (shàngxún) refers to the first ten days of a month (approximately days 1–10), dividing the month into three periods: 上旬, 中旬 (middle third), and 下旬 (last third). This system is commonly used in Chinese for specifying approximate dates. For example, 十月上旬 means "early October."
报告将在三月上旬发布。
Bàogào jiāng zài sān yuè shàngxún fābù.
The report will be released in early March.
我们计划十月上旬出发去西藏。
Wǒmen jìhuà shí yuè shàngxún chūfā qù Xīzàng.
We plan to depart for Tibet in early October.
六月上旬天气还不算太热。
Liù yuè shàngxún tiānqì hái bú suàn tài rè.
The weather in early June is not too hot yet.