Does the later Han Dynasty refer to the Western Han Dynasty or the Eastern Han Dynasty?

1, the Eastern Han Dynasty (AD 25-AD 220) was also called "the later Han Dynasty", and the Western Han Dynasty (AD 206-AD 25) was also called "the former Han Dynasty".

2. The "Hou Han" in the Book of the Later Han Dynasty refers to the Eastern Han Dynasty. At the same time, "Houhan" is also the name of the dynasty of Houhan (947-950 AD), one of the Five Dynasties. Just saying "the later Han Dynasty" is sometimes difficult to judge which later Han Dynasty it is. For example, the preface to Shuo Wen Jie Zi said: "The thirty volumes of Shuo Wen Jie Zi were written by Xu Shen in the later Han Dynasty." be