Cool! It's a life-changing thing to start getting good public transit in a city!
When Wuhan got its first metro (line 2: line 1 is a then-useless elevated light rail) it was actually possible to cross the Yangtze river in reasonable amounts of time, meaning that the two major halves of the city could finally interact properly without hours-long (note the plural) traffic jams.
Now with twelve lines built:
And with a bunch of extensions and new lines in the works, I haven't had to use a private vehicle in ages to go almost anywhere in the city with only a short bus ride and/or short walk on each end.
Ho Chi Minh City: congratulations and enjoy your new life as it unfolds before you.