Open ditches and underground ditches were two types of drainage ditches. Open ditches referred to visible drainage ditches, often used in places such as roadsides and stadiums. Water could flow directly into the ditches from various locations. The cover was usually a comb or grill, which could pass water and intercept debris. A hidden ditch was a ditch that guided water below the ground. It was usually used to lay water pipes, electric wires, and other pipes. The cross-section was larger than an open ditch. The cover was usually steel plate or concrete. Water could not flow directly into it, and the cover could not block it. Open ditches were suitable for excavation and helped to discharge surface water, which was beneficial to the regulation of underground water level and soil moisture. The underground ditch could drain water quickly, occupy a small area and have a small amount of earthworks, which was helpful for field machinery operations.
I'm not entirely sure what 'beauty drain fanfic' specifically refers to. It could potentially be a type of fan - created fictional story where there is some element related to the draining of beauty in a very imaginative or unique context. But without more context, it's difficult to be more precise.
Once upon a time, the reader was walking in the neighborhood when they stumbled upon Mr Kat. Mr Kat was up to his usual antics, plotting against Kid. The reader, being a kind - hearted soul, decided to intervene. They tried to reason with Mr Kat, explaining that Kid was just a kid having fun. Mr Kat scoffed at first, but as the reader continued to talk, he started to listen. In the end, Mr Kat and the reader formed an unlikely friendship, and Mr Kat decided to give Kid a break.
Once upon a time, the Reader found themselves in the middle of the chaos between Kid and Mr. Kat. Kid was always up to his mischievous antics, much to Mr. Kat's annoyance. The Reader decided to try and mediate. They talked to Kid, explaining that Mr. Kat was just trying to keep things in order. Kid was hesitant at first but then started to listen. Mr. Kat, seeing the Reader's efforts, was also more open to Kid's youthful energy. In the end, they all found a way to coexist more peacefully.
As for the question of which was better, an open pipe or a hidden pipe, the following conclusions could be drawn: an open pipe and a hidden pipe had their own advantages and disadvantages. The advantage of an open pipe was that it was more convenient to repair, and there was no need to dismantle the walls or floors, saving costs. The advantage of a hidden pipe was that it was more aesthetically pleasing. It could be wrapped with decorative materials and did not need to be cleaned frequently. However, the exposed pipes could easily affect the overall beauty of the bathroom, and once the hidden pipes had problems, they needed to dismantle the walls to repair them, which was very troublesome. In addition, according to the different regions, the north suggested going through the dark tube, while the south could consider going through the open tube. Overall, the choice of open or hidden management should be decided according to individual needs and regional climate conditions.
I'm not sure which specific 'the drain scary story' you mean. There could be many horror stories related to drains. It might be about something creepy coming out of the drain, like in some urban legends where strange creatures or ghosts emerge from the dark, wet drains at night.
A 'level drain novel' could be about a lot of things. It might involve a concept where characters experience a draining of their levels, like in a game - based story. Maybe it's about a world where power levels are being sapped from individuals in a mysterious way, leading to all kinds of conflicts and struggles.
One popular character to include could be Coop's sidekick or pet. It could add some comical relief to the story. Another might be a mentor - like figure who gives advice to Kid and Fem Kat during their adventures.
One common theme could be friendship. Despite the 'vs' in 'kid vs kat', when the 'coop' and 'female kat' are involved, it might show how they can work together and form friendships.