Table:
Dongzhi Festival

Tangyuan, a traditional Dongzhi Festival food

Official name	Dongzhi (冬至)
Also called	Tang-cheh (冬節)
Tōji (冬至)
Dongji (동지)
Observed by	Chinese, Japanese, Koreans
Type	Cultural
Significance	Marks the winter solstice
Observances	making and eating of tangyuan, ancestor worship
Date	Winter solstice (between December 21 and December 23)
Frequency	annual
Related to	Winter solstice

For the cells in row 9 of this table, provide their contents. Show the cells in a row in the JSON format {"row_id":"<row index>", "cell_list":"<a list of cells in this row>"}. For example, {"row_id":"1", "cell_list": ["A", "B", "C"]}.

The cells in row 9: {"row_id": "9", "cell_list": ['Frequency', 'annual']}