2 sentences

1. 农历九月初九是重阳节。

   nóng​lì Jiǔ​yuè chū​jiǔ shì Chóng​yáng​jié.

   The ninth day of the ninth lunar month is the Double Ninth Festival.

   Source: Dong Chinese Dictionary

2. 每到重阳节，爷爷总是习惯在身上插上一枝茱萸。

   měi dào Chóng​yáng​jié, yé​ye zǒng​shì xí​guàn zài shēn​shang chā​shang yī zhī zhū​yú.

   Every Double Ninth Festival, Grandpa has the habit of wearing a sprig of dogwood.

   Source: Dong Chinese Dictionary