The places suitable for fishing in Dingxing Wild River in Beijing include Dingxing Town Fishing Ground and along the Wild River.

1. Dingxing Town Fishing Ground: This is a fishing place that provides multiple fishing ponds for fishing enthusiasts. You can rent equipment and fishing gear here and enjoy fishing.

2. Along the Wild River: Dingxing Wild River flows through this area, and you can choose to fish along the river bank. Find a suitable location and fish according to local fishing rules and regulations. Please note that before engaging in fishing activities, it is recommended that you understand the local fishing rules and regulations and abide by the relevant regulations. In addition, if you are a novice fisher, you can consult local fishing clubs, professional fishermen or relevant fishing forums to get more advice and guidance on fishing in Dingxingye River.