Daily Chinese Idiom Guessing Game
Extending in all directions; describing a place with excellent transportation links or good connections.
四面八方都有路可通。形容交通极便利。也形容通向各方。
《子华子·晏子问党》其途之所出，四通而八达，游士之所凑也。”
The new subway station makes this area si tong ba da, connecting to every part of the city.