Sluban bricks are their own designs and not knock-offs of Lego. The brick quality is somewhat inferior compared to Lego and the minifigures are not compatible, but the price is right considering the number of bricks you get for the price. The Aliexpress store also has other Sluban construction building sets on sale. The M38-B0555 Tower Crane set looks intriguing and would look neat in my modular town.
Here is the link to the listing where you can choose which set you want.
https://www.aliexpress.com/item/SLUBAN-Mini-Engineering-Vehicles-Series-Truck-Tool-learn-education-DIY-enlighten-building-blocks-sets-for-Children/32708527335.html
Please remember that I cannot verify whether the seller or the item featured is good or not. Use your own judgement and research before making any purchases. I have no affiliation to Aliexpress or the sellers found there.