Although Shanghai is a sea port, most families did not incorporate fish in their daily meals in the early 20th century. Eating meat with meals was considered a luxury, as the typical meal consisted of vegetables, beans, and rice. In a month, most families typically usually ate meat or fish for about four meals: on the second, eighth, sixteenth, and twenty-third day of each month. These days became known as "dang hun". In recent times, special attention has been paid to low-sugar and low-fat food, with a good quantity of vegetables and improved nutritional value.