Miaoli | Roaming around the old mountain city Hakka indigo dyeing DIY & Old Mountain Line Railway One-day tour | Departing from Miaoli High-speed Railway Station

The Hakka indigo dyeing DIY experience begins with preparing a natural indigo dye bath. This typically involves dissolving indigo powder in an alkaline solution, often using a reducing agent like fructose or a fermentation process to make the indigo soluble. The solution is carefully monitored to reach the optimal pH and temperature, creating a vibrant, living indigo vat ready for dyeing. Participants learn about the traditional methods and the science behind the dye preparation.

For Hakka indigo dyeing DIY, natural fibers are highly recommended as they absorb the dye most effectively. Common choices include cotton, linen, hemp, and silk. These fabrics allow the indigo to penetrate deeply into their fibers, resulting in rich, long-lasting blue hues. Synthetic fabrics, due to their different chemical structure, generally do not take indigo dye well. Participants can usually choose from pre-prepared natural fabric items for their DIY project.

Unlike many other natural dyes, indigo is a substantive dye and traditionally does not require a mordant to achieve colorfastness. The indigo molecules bond directly with the fabric fibers through an oxidation process when exposed to air. This unique characteristic is part of what makes indigo dyeing distinct. The DIY experience will guide participants through the proper techniques to ensure the color adheres well to the chosen fabric without additional mordants.

After the Hakka indigo dyeing DIY, effectively setting the color ensures its longevity. The primary technique involves thorough oxidation, where the dyed fabric is exposed to air to allow the indigo to bond with the fibers and turn blue. This is often followed by rinsing the fabric in clean water to remove any excess dye solution. Some processes may include a mild acid rinse or a gentle wash with a pH-neutral soap to further stabilize the color and clean the fabric.

Travelers can reach Miaoli High-speed Railway Station by taking a High-Speed Rail (HSR) train directly to the station. From the HSR Miaoli Station, local public transportation options like buses or taxis are available to connect to the surrounding areas, or the tour operator may provide specific instructions for meeting points near the station. It is advisable to check the HSR schedule in advance and plan local connections to ensure a timely arrival for the tour's departure.

The Old Mountain Line Railway offers a journey through picturesque historical landscapes. Participants can experience charming old train stations, lush green tunnels, and scenic bridges, including remnants of the railway's past. The tour often highlights viewpoints that showcase the natural beauty of Miaoli's mountainous terrain and the unique engineering of this historic railway line, providing a nostalgic and visually rich experience.

The Longteng Broken Bridge is a historic landmark of the Old Mountain Line Railway, renowned for its striking, fragmented arches. Originally constructed during the Japanese colonial era, the bridge was severely damaged by the 1935 Hsinchu-Taichung Earthquake. It was never fully repaired, leaving its remaining brick piers and arches as a poignant monument to its past. The site now serves as a popular tourist attraction, telling tales of Taiwan's railway history and resilience against natural disasters.

For beginners in Hakka indigo dyeing DIY, starting with simple patterns like folding or tying the fabric can yield beautiful results. Patience is key, as multiple dips in the dye vat with adequate oxidation time between each dip will deepen the indigo color. Wearing gloves and an apron is recommended to protect hands and clothing. Following the instructor's guidance on submersion time and air exposure will help optimize the process for a satisfying and unique creation.