Explanation of the three timelines in Jia Dou (Armor Duel): 1. 第一个时间线是现实世界，描绘了主角在现实生活中的冒险经历。 2. 第二个时间线是游戏世界，主角在游戏中扮演虚拟角色进行战斗。 3. 第三个时间线是内心世界，主角在梦境中与自己的心灵对话和成长。 The first timeline is the real world, depicting the protagonist's adventurous experiences in real life. The second timeline is the game world, where the protagonist plays a virtual character and engages in battles. The third timeline is the inner world, where the protagonist engages in conversations with their own mind and undergoes personal growth in dreams.