How to fold a children's folding trolley?

Step 1: First find the unlocking device of the good boy cart, as shown in the following figure:

Step 2: Move with your fingers and push up, as shown below:

Step 3: Release the V-shape when pushing it in, as shown in the following figure:

Step 4: While folding both sides, press the handle of the trolley by hand, as shown in the following figure:

Step 5, complete the folding at this time, as shown in the following figure: