Convert from livre [France] to tahil [China]

Unit Definition (livre [France])
The livre is a traditional unit of weight in French speaking countries and in Greece. The livre corresponds to the English pound and to the Spanish libra. The livre is divided into 2 marcs or into 16 onces. The French livre varied from market to market, but the official standard from about 1350 to the introduction of the metric system was the livre poids de marc or livre de Paris of 489.5 grams (1.079 English pounds). In modern France, the livre is used as an informal metric unit equal to exactly 500 grams or 0.5 kilogram (1.1023 pounds). The traditional Greek livre is also about 500 grams.

Unit Definition (tahil [China])
The tahil is a traditional unit of weight used throughout eastern Asia. During the colonial period, the tahil was more or less standardized throughout the region at 4/3 ounce avoirdupois (1/16 catty, 1/12 pound, or about 37.8 grams). In Japan, however, the tahil was identified with a slightly smaller traditional unit and is considered equal to 1.323 ounces (37.51 grams). The tahil is usually considered equal to the Chinese liang.