What should I do if the curtain slide doesn't pull? It's the kind where the pull ring is directly sleeved on the steel bar

This happens when the curtain slide is rusted and lacks lubrication. Grease should be applied. You can use that synthetic lubricating silicone grease, which is colorless and transparent, with good adhesion, good durability and safety certification. Tiger bees or Krupp can do it. There is a small tube of130g in the peach leopard, which is suitable for home use.

Don't use lubricating oil and ordinary butter for the lubrication of curtain slideway, it will have a harmful smell to human body.

When in use, carefully wipe the slideway, dry it, coat it with a thin layer, and then pull it smoothly.