Old people gather around the Hoan Kiem lake for some exercise or massage. I could see people around the lake as well as on the shade of every street. It should be boiling hot in a room without air conditioners.
It quite looks like most of Vietnamese men have their hair cut on the street. I could come across several street barbers walking around the Hoan Kiem, while no barber shop I could find.
You can have local foods and street foods together with cold beers. This is beer street.
Talking about street foods of Vietnam, rice noodle should come first. Their main meal is rice as is in most of Asian countries. Making noodle from rice is not easy but they are widely enjoying rice noodle in Vietnam. No wonder they have to add 30% of flour to make rice noodle, which I found out later. Anyhow not just taste but the price is attractive : it cost me just $1.3. I must pay $13 to have the similar one in Korea. It's a heaven for noodle lovers.
At last I met the old friend. He was excited to meet the friend flown all the way from Korea to Vietnam and reserved a fine dinning restaurant. We could taste the 4 most renowned Vietnamese street dished on the table. Street food in a decent restaurant. What a contradiction! :-)
Actually the way they enjoy Vietnamese street food should be like this, not in the decent restaurant.