The Taichung MRT formally opened on April 25, 2021. Its green line opened first, connecting the city’s high-speed rail and traditional rail (Taiwan Railways Administration) stations. The system has made transportation in the city even more convenient and is helping to spur development opportunities. To mark the occasion, Chunghwa Post has specially issued a souvenir sheet that includes two stamps. Suiting the topic of the MRT’s launch, the outside edge of the sheet resembles the streamlined shape of the front car of an MRT train. The marginal inscription features a simple line-draft illustration, which creates a visual effect that is at once refreshing, streamlined, and modern, echoing the light, simple, and open style of the MRT station. The designs of the stamps follow: 1.HSR Taichung Station (NT$15): Its curved and linear elements convey a sense of the meetings and continuous movement flows facilitated by a station that brings together high-speed rail, traditional rail, and local mass rapid transit, thereby demonstrating the vitality of urban development.2.Taichung City Hall Station (NT$35): The design emphasizes smooth curves, conveying a sense of the air currents created by a train in motion.