àn zhào / dāng shí / de / jì chéng / zhì dù / zhǐ yǒu / dí chū / zhǎng zǐ / cái / yōng yǒu / yōu xiān / jì chéng quán

按照当时的继承制度，只有嫡出长子才拥有优先继承权。

Under the inheritance system of the time, only the eldest son born to the wife had priority in inheriting.