It’s because there was too much water.

Bean braised noodles, the noodles are slightly harder than the noodles you usually eat. When the vegetables are almost cooked, pour in water until the vegetables are covered with water, which is enough to raise it by one centimeter. Put the noodles on. After simmering for a while, shake the noodles to prevent them from sticking.

This is the best braised noodles.

Try it. I don't know if it's different from what you did.