Wuxi to Suzhou is a very suitable route for cycling. You can ride along the scenery of Taihu Lake and enjoy the beautiful lakes and scenery. Here are some suggestions for a day's cycling:

1. Depart in the morning: Depart from Wuxi in the morning and choose a suitable starting point, such as the downtown area of Wuxi or the scenic spots near Taihu Lake in Wuxi. Prepare enough water and food to ensure that the bicycle is in good working condition.

2. Riding along Taihu Lake: You will pass some beautiful scenic spots along the way, such as Yuantouzhu in Wuxi and Mudu Ancient Town in Suzhou. You can stop to have a rest, take photos or enjoy the scenery by the lake on the way.

3. Arrive in Suzhou: It takes about 2-3 hours by bike to get to Suzhou. You can choose to stay in downtown Suzhou and explore some famous scenic spots, such as Suzhou gardens and classical blocks. If you have enough time, you can also go around Suzhou, such as Humble Administrator's Garden, Tiger Hill and Lion Forest.

4. Lunch and rest: Find a comfortable place to have lunch and have a rest to prepare for the afternoon ride. You can choose to eat in a restaurant in downtown Suzhou or bring your own food.

5. Return to Wuxi: Return in the afternoon and return to Wuxi along the original road. If you have enough time, you can choose different cycling routes and enjoy different scenery along the way.

6. Safety precautions: Please ensure your own safety during riding. Wear appropriate riding equipment, including helmet and riding gloves. Pay attention to traffic rules and road conditions, be vigilant and try to avoid congested sections.

Summary: One-day cycling from Wuxi to Suzhou is a wonderful outdoor experience. You can enjoy the beautiful scenery of Taihu Lake and appreciate the natural scenery and cultural heritage. But please pay attention to the reasonable arrangement of time and physical strength to ensure that your physical condition is suitable for riding. I hope you have a wonderful trip!