Core Viewpoint - The opening of the Tianjin Rail Transit Z4 Line Phase I (North Section) marks a significant achievement in the construction of the "Railway on the Beijing-Tianjin-Hebei" initiative, featuring high-quality electric passenger trains developed by CRRC Dalian Company [3] Group 1: Train Specifications - The train consists of a six-car A-type aluminum alloy body, with a maximum speed of 120 kilometers per hour, showcasing lightweight and corrosion-resistant characteristics [3] - The exterior design features dynamic purple lines inspired by the Binhai New Area's "Wave Art Museum" and Rainbow Bridge, symbolizing "set sail" [3] Group 2: Interior and Technology - The interior design combines technological aesthetics with industrial beauty, equipped with color-separated seating and an intelligent lighting system [3] - CRRC Dalian Company has integrated smart systems such as bow-net monitoring, running part fault diagnosis, and regenerative braking energy feedback, achieving a perfect blend of green energy conservation and intelligent operation [3]