Read the full article and talk about the purpose of writing about the battle between Qin and Jin in the second half of the article.

The Battle of Qin's Attack on Bo was a battle in which the Qin army attacked Chu's vassal state of Bo (also known as Xia Bo, southwest of present-day Xichuan, Henan) in the eighteenth year of King Xiang of Zhou (635 BC). The Battle of Qin, Jin and Wei took place in the 25th year of King Xiang of Zhou Dynasty (627 BC), which was 8 years after Qin's attack on Wei. During the Battle of Chu, Duke Wen of Jin had just returned to his country and ascended the throne with the help of Duke Mu of Qin. The two countries of Qin and Jin were on good terms.

In the BC calendar, the year with the larger number comes first. Are you mistaken?