De rien Au revoir Moi aussi Crois-moi

I guess that it has a word or a sentence before "表达了你什么都无所谓" For example, your girl friend is trying on some new dresses and she asks you "which one do you prefer, the black or the red?" and you answer "it's up to you" Here, "it's up to you" in chinese means "随你" And we can make a sentence "随你"表达了你什么都无所谓 "随你"is just a simple word, an example "表达"is a verb, means express "你" is short for "对于你", means for you "什么"is a pronoun, means whatever, everything "无所谓" means you do not care the whole sentence means everything make no difference for you

我在这样学习 我像这样学习

It's only a chinese writing style,maybe several yeas ago,a girl or a boy had created this expression,but with no reason, it became famous in china.And now, we are accustomed to the use of the expression . 身高 in this sentence doesn't have any specific meanings, it only repreents something difficult between the lovers.

高山景行gāo shān jǐng xíng 【解释】：高山：比喻道德崇高；景行：大路，比喻行为正大光明。指值得效法的崇高德行。 【出自】：《诗经·小雅·车辖》：“高山仰止，景行行止。” 【示例】：若夫清风明月，必思玄度，～，独仰仲尼。 ◎宋·杨万里《与余丞相》

Hi,Cherry~Chengyu are mostly derived from ancient literature, but threr're also many Chengyu which are created from now on. Some chengyu have their own stories and meanings, and some others in fact come from daily life. All of Chengyu do not contain only one significance, it's different in different sentences. Like some English words have many significances. And now,we don't use too many Chengyu in oral chinese, mostly, we use chengyu in our writings. I think, Chengyu is difficult to learn. If you can use it correctly, your chinese must be perfectly well.

ça va bien, merci. Et vous?