How to grow succulents like vegetables, a step-by-step guide to getting them into great condition

Dear readers, happy Monday. Time flies so fast, there are only four months left until 2019. Summer is over, how are the flowers at all you gardening friends' homes doing? Today I went to a friend's house to hang out, and the succulents his mother grows completely refreshed my understanding of succulents. What do you all think of how these succulents look?
My friend's family has a self-built house with a fairly large rooftop. His mother likes to grow some vegetables on the rooftop, and there is quite a variety. Once, my friend had to go away on a business trip for a month, so she handed her beloved succulents over to her mother, who told her to go on her trip with peace of mind and that she would definitely take great care of her succulents.
When she came back from the month-long business trip, she found that her mother had moved all her succulents to the rooftop and was growing them together with the cabbages, and the succulents and cabbages were so mixed up you could hardly tell them apart... My friend just stopped looking at them and left them there for the aunt to watch over..
That the aunt could grow the succulents so robustly on the terrace was still quite beyond my expectations. Many succulent owners think the rooftop environment is hard for growing succulents, since birds often come to eat them. The aunt growing the succulents together with the vegetables meant the birds no longer ate the succulents at all, at most pecking at the nearby greens, which actually worked in the succulents' favor.
Growing succulents on a rooftop has pros and cons. The good part is great ventilation and plenty of sunlight; the bad part is that continuous rain easily causes rot. For these succulents, the aunt even set up a shade net specially. It can block direct harsh sunlight, and when it rains she puts a piece of tarpaulin over the top, so raindrops won't hit the succulents directly.
After the ordeal of summer, there were also several pots of many succulents with only the pots left. A few pots of solid ones remained, growing quite strong and pleasing to the eye. When she usually fertilizes the vegetables, she also gives the succulents a little, using nutrient solution specially made for succulents. Of course, the aunt doesn't know what these are; my friend buys them for her. Whether for vegetables or succulents, it's all organic nutrient solution, purely plant-fermented, with zero added hormones, eco-friendly and safe.
I'm amazed at succulents' super strong ability to adapt to their environment. Some succulent owners always say they can't keep their succulents alive. Could it be that they were "loved to death" by them? Maybe if you just toss them aside and water once a month, they'll show you off-the-charts looks! Haha