Big Puzzle Box

This level is not difficult, the difficulty is that the mechanical structure made me half-dead.
You need 'corner drop' to enter the hole (I don’t know the name of this trick, it may be too basic to see the relevant introduction): It is difficult to guarantee that you will not get stuck in the hole when B fall, if you get stuck, reopen it... use When returning to the top floor by autopilot, you need to leave more distance on the ground. If you climb directly on the metal, it is easy to get stuck halfway.

Spoiler: Hints

Go to the red brick to trigger the mechanism, then return to the top floor and jump into the hole;
After getting the star, use the low ceiling technique to reach the lifting platform and return to the top floor;
Then jump into a new hole and wait for the machine to run automatically;
Get the second star, wait for the end block to appear to pass the level.

Spoiler: Video

Very six,full of surprises everywhere.

@Bu cen ic l Boss, will you finish your crazy level tomorrow? 233

@935 我想等有视频了一块发（doge）

@935 Sorry my friend but too many issues with this level... in the end I saw your movie to check what I was doing wrong but to my surprise I was in the right way... a pity but I spent about an hour and I think that it is enough... but well, I have completed several of your levels, which are usually tricky but I like them, so I will be attentive to your next level

Very interesting and original level. Excellent mechanics!!! The mechanics at this level definitely deserve 5. As for the gameplay, it's not obvious. I really want to thank you for your concern for players at this level!!! You made a video and wrote good tips!! This is a good care for the players - thank you very much!
About the gameplay:

Spoiler

I really like the first move - falling down from the stairs. I love this move and use it on my levels too. It is very stable, simple and effective. Climb to the top - I call this "out of level" auto autopilot. I love this move too. I don't really like BB at this level. But this is quite acceptable, because I like BB down much more (than BB up).

Thank you for an interesting level with an interesting design

I used Mekostudio to see the inside of the box, but there is so many sliders and zappers inside. How do I go in?