My hometown is Danang, a major city in Vietnam’s South Central Coast.
Hanoi is much bigger than my town
Hanoi is surrounded in all direction by a populous rural area. Danang is also surrounded by the countryside, but only to its Western and Southern sides, to the North and the East of the city is the South China Sea. The rural area surrounding Danang, despite being one of the most populous in Central Vietnam, is still much more sparsely populated than the area around Hanoi.
The climate in Hanoi is more extreme than that in Danang. In summer it’s hotter in Hanoi than it is in Danang. And Hanoi also has a long, chilling winter while Danang has a relatively short, mild one.
Being a bigger city equals offering more opportunities. Hanoi’s economic scene is more vibrant than Danang’s.
Hanoi is also the bigger industrial centre, as a result, it’s also more polluted than my hometown.
Hanoi is much older than Danang. A city was founded in modern-day Hanoi under Second Chinese domination of Vietnam in the 5th century AD, while Danang, as a city, was founded in the 17 century.
Hanoi is more conservative, my hometown is more liberal (just as any Southern Vietnamese city).
People in Hanoi speak the Northern Vietnamese dialect. In Danang, we speak a variation of the Southern dialect. The two dialects are mutually intellegible.
That’s all I can think of right now :)