1- about the pinyin, if i wanna convert "Pablo" to chinese, should be "pa bu luo" or "ba bu luo"?, in this case the sound of P is equivalent to the chinese P or B? -here the sound of P is "equivalent" to P in pinyin. 2- in any case, how should be the tones of each syllable, 144 or 142? -remember that if you don't write out the characters, no one can tell you what the tones are. even if you give me the character, sometimes it can have more than one tones. 3- how about the respective characters? -same as question 2. firstly give me the pinyin with tones. then i can give you one or more corresponding characters. one character has one pronunciation (pinyin with tone), except for some uncommon cases when a character has multiple pronunciations. those characters are called 多音字. one pinyin (pronunciation) can mean usually a lot of characters. in other words, many different characters can have the same pronunciation in Chinese. so the relationship between characters and pinyin are complex, uncertain. but anyway, i will give you some suggestions: 帕布罗 pa4 bu4 luo2 it's a good try but, well it's not a name. instead of converting it to Chinese, why don't you choose some characters that you like and let us make a real Chinese name for you. the common trick is to choose one sound out of your Spanish name and use it as the last name (Chinese last name usually only has one character), then choose whatever characters you like to be your first name. For example you can use 布 or 步 or 罗 as your last name, 罗 is a very common last name.

帕布罗 pa4 bu4 luo2

pa bo2 luo2 is most close to pablo in speech. ba1 bu4 luo2 will be more easier for chinese to say it. however neither of them sound like having some special meaning in chinese, they just sound like a name translate from other language. anyway, i suppose (ba1 bu4 luo2) will be easy to remember. if you introduce yourself like, my name is "ba1 bu4 luo2", i have a world-famous brother called "ba1 bu4 dou4" (bob dog's chinese name, which is well kwnown in east asia). people will think you have a good sense of humor.

actually this doesn't matter.in chinese book we translate one english name into different chinese names.some books use 巴布罗 while some other books use 帕伯罗. it's just which you prefer.and in the movies we don't even translate the names we just let it be what it is

According to Spanish prononciation of "p", the most equivalent Chinese name for you should be Ba1 bo2 luo2.