The sentence "West of the old city, continue the front edge, Mochow will be fixed for life with one dance" means: in the place west of the old city, we will continue the previous fate without worrying about a dance performance. It means it's in the west of the old city. It's not over yet. Don't worry that your dance can decide a lifelong event.

In this sentence, "west of the old city" may refer to a place, or just a virtual scene, while "continuation of the frontier" means that the previous fate can continue here, which may mean that two people meet here and start their love again. "Mochow dances for life" means that you don't have to worry that the performance of a dance can determine your life, because in this case, dancing is just a way to express yourself, not a key factor to determine lifelong events.

Generally speaking, this sentence expresses a positive emotion and encourages people not to worry that their dance or other performances can determine lifelong events. It emphasizes the importance of personal expression and self-confidence, but it also reminds people not to underestimate their own value and ability.