Who wrote the משנה ברורה?

Who wrote the משנה ברורה? The משנה ברורה שי"ח ס"ק י"ד ) writes:          " Food that was cooked for a sick person on  Shabbos, even healthy people may eat it immediately on Motzei Shabbos. (Since it was  cooked בהיתר  there is no problem of בישול עכו"ם &  no need of בכדי שיעשו) " The Dirshu Mishna Berurah quotes from the  (שביתת השבת & שונה הלכות (ר' חיים קניבסקי שליט"א who ask from the מ"ב שכ"ח ס"ק סג "Food cooked for a חולה on  Shabbos may not be eaten on Motzei  Shabbos even for the חולה, since you  can cook for him fresh food on Motzei  Shabbos." The שביתת השבת & שונה הלכות answer various answers to solve the contradiction in the מ"ב. In the ספר כל ספרי החפץ חיים ח"ג There is a chapter written by the son of the Chofetz Chaim הרב אריה לייב הכהן זצ"ל. He writes that the Chofetz Chaim paid him a monthly salary of 20 Rubles so that he will help him with writing the מ"ב. The first volume of the מ"ב and most of volume 3 was written entirely by the Chofetz Chaim.  The rest of the מ"ב R. Aryeh used to send to the Chofetz Chaim his pieces of Mishna Berurah & Biur Halacha. The Chofetz Chaim reviewed (edited) and entered them in the Sefer. When the Chofetz Chaim wasn't satisfied he rejected it and entered his own. There were times when a Halacha somehow slipped through and was entered even though the Chofetz Chaim was not in agreement with it.  Therefore you will find at times contradictions in the מ"ב.  One such example is the סתירה in the מ"ב between סימן שי"ח & סימן שכ"ח  R Aryeh writes that in שי"ח is the Psak of the Chofetz Chaim who allowed eating the food immediately after Shabbos. In  שכ"ח is his own Psak where he argues on his father and forbids food cooked by an Akum on Shabbos to be eaten after Shabbos.

What A Joke ?

           כחוכא ואיטלולא

The Mishna Verurah(24:7) writes in the name of the קדמונים

that by placing the ציצית over the eyes when saying

Parshas ציצית one is guaranteed not to become blind.

The Mishne Verura continues that

 "a blind man may hold his  ציצית in his hand even though it says וראיתם אותו since others can see it.

However, the blind man should not place the ציצית over

his eyes since it will seem כחוכא ואיטלולא." [It looks weird and 

laughable for a blind man seeking protection of not 

becoming blind.]

I was just wondering when some צדיקים do strange things during their עבודה no one looks at it as weird. 

On the contrary, it is assumed they have  deep Kabbalistic hidden  כוונות.

So too why is it considered weird & laughable when a blind man would place his ציצית over his eyes and we don't assume it to have a deeper meaning?

       Seems) that this privilege is only applicable)   ווייזט זיך אויס

to צדיקים. When they act strangely during performing Mitzvohs  we may not question it. We must assume they are performing with hidden Kabbalistic כוונות.

For the המון עם (simple Yid) they have to be careful not to 

do strange actions while performing Mitzvohs otherwise it

will be  כחוכא ואיטלולא