A household flush toilet has an inlet pipe with a flow rate of 0 1 liter per second

If it's a hose connected in the middle, just buy one yourself and change it, those hardware stores and plumbing stores should have it.

It is possible that the water inlet rod does not turn off the water automatically, and the other is that the flush valve is leaking. You'd better look for a store that sells your toilet and you'll know what's wrong with a professional look.

Before connecting, first determine the size of your own toilet drain (that is, the distance between the drain and the wall), but also determine whether the product, accessories, and instructions you buy are complete, and carefully read the instructions to understand some product matters. 1. The drain is required to be handled by the installer smoothly, and the bottom outlet of the toilet should be equipped with a special flange for the toilet, or the glass glue should be applied evenly with the drain, and the bottom and surrounding of the toilet should be glued, and the gap between the toilet and the wall should be even, placed properly and steadily. 2. After the toilet is in place, it is required that there is no leakage in the water intake, the water level is correct, the flushing is smooth, the switch is flexible, and the cover is stable. >>>More

If your hands-on ability is poor, it is best to find a professional master to repair it. Otherwise, if you break it when disassembling other parts, you will have to increase the expense.

Visually, the water inlet filter is blocked, and it should be fine to clean it up.