These days, it is easy to see people walk and run at Nga Tu So tunnel in Dong Da District early morning or late afternoon.
A local resident said that it is warm and safe to do exercises at the tunnel.
The tunnel has two lanes so it is quite large for people to do exercise
Hanoi is experiencing chilly weather with a lowest temperature of just 8 degrees centigrade. People are advised to keep warm. If not necessary, they should not go out.
Anh Hieu said that he and his friends often do exercise here when it is rainy and too cold.
