Others grow vegetables sparsely, but experts grow a waterfall of vegetables too many to eat

We grow vegetables not just for fun, but also to eat clean, fresh vegetables, but the vegetables we grow ourselves are just sparse. Come and see the vegetables grown by a vegetable-growing expert, and be envious.
These are the celtuce grown by a vegetable-growing expert on the rooftop. Grown in a small styrofoam box, the vegetables still grew quite big
This is also lettuce grown in a styrofoam box. Styrofoam boxes keep warmth, moisture and fertilizer, and are cheap and easy to get, so they are really quite good for growing vegetables
These are cherry tomatoes grown on the rooftop. Many are not ripe yet, but the yield is truly good
And this is a pumpkin that was grown. What vegetable do you think it is?
This kind of vegetable grows too big, so you still have to tie the heart, which lets it wrap its heart and grow better
In just a small pot, you can even grow cowpeas, but you need to set up a trellis
Being able to grow vegetables like this on the rooftop really makes people envious. Basically, there will be no need to buy vegetables in the future