Let's say 25 square miles/65 sq km and about half a million people. A square, 5m x 5m/8km x 8km grid layout would make the city super easy to navigate.

假设25平方英里/65平方公里，大约50万人。一个正方形，5m×5m/8km×8km的网格布局，非常有利于城市发展。