In one sentence, describe what the following article is about:

" This fairly standard phrase is a neutral way to ask someone to be quiet without any insulting connotations. You may, for instance, hear teachers use this to quiet students during study time. "Shizukani" is pronounced "shih-zoo-kah-knee." The first syllable uses the short i sound (as in "pit"), while the last syllable uses the long e sound (as in "tea"). Note that the last syllable here doesn't have the extra-long emphasis used in "yakamashī."  This phrase is written "静かに". This option is still a little abrupt and forceful to use with strangers, so you'll probably want to opt for the phrase below if you want to be extra-delicate. " This is one of the most polite ways you can ask someone else to be quiet — for instance, it's perfect for hushing noisy people around you in a movie theater. "Shizukani" is pronounced exactly as in the step above. "Shite" is pronounced "she-tay" (use the long e sound as in tea for the first syllable). "Kudusai is pronounced "koo-dah-sigh." Once again, the u sound is made without moving the lips forward.  This phrase is written "静か に して ください". Remember the word "kudasai" — it's Japanese for "please," so you'll end up using it a lot if you learn more common Japanese phrases. If you ask someone to be quiet politely and they do quiet down, don't forget to say thanks! "Arigatō" is an all-purpose Japanese way to say "thank you." It's pronounced "ah-ree-gah-toe." Use the delicate Japanese r sound made with a flick of your tongue described above. You'll also want to hold the final o sound a little longer than normal (just like you did for the ī in "yakamashī")  This phrase is written "ありがとう". For "thank you very much," you can say "arigatou gozaimasu." "Gozaimasu" is pronounced "go-zye-moss." Note that the second syllable rhymes with "eye" and the u at the end is not pronounced. This phrase is written "ありがとう ございます".
Say "shizukani" for "be quiet. Say "shizukani shite kudasai" for "please be quiet. Respond with "arigatō" when you get what you ask for.