(1) Yicheng: a famous weapon-making place in Dongwu. Smelting: a "Taiwan".
⑵ Luting Pavilion: Pavilion name, in Jinling.
⑶ Cai Zhou: the name of Jiang Zhongzhou. Cai: One is "Fang".
(4) shogunate: mountain name.
5. Rise and fall: refers to the rise and fall of the country. People: refers to people's actions.
[6] Empty terrain of mountains and rivers: there are dangerous situations in which mountains and rivers are empty.
(7) Back Garden Flower: namely "Yushu Back Garden Flower", the name of the song written by Chen Houzhu.