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Wuxi's official English portal lists four autumn fireworks evenings at Yuantouzhu Scenic Area: 25 September, 1 October, 3 October and 5 October. The water-and-music show is themed around the twelve Chinese flower deities, with fireworks choreographed to music above Taihu Lake.
The official overview does not publish the start time, ticket price or detailed entry arrangements. Check Yuantouzhu's official ticket channel for the session you want before paying or travelling, and allow extra time for the journey and entrance on these holiday evenings.