How are the muslin and Chinese calendars different?

The Muslim calendar, or Hijri calendar, is a lunar calendar consisting of 12 months in a year of 354 or 355 days, making it about 10 to 12 days shorter than the solar year. In contrast, the Chinese calendar is lunisolar, incorporating both lunar months and solar years, resulting in a system that aligns more closely with the seasons. This means Chinese months can vary in length, and an extra month is added periodically to keep the calendar in sync with the solar year. As a result, the two calendars have different structures and cultural significance in their respective societies.