it is possible to cancel Chinese symbols and write using pin-yin with tones because this is how it works in oral speech it's just Chinese people like to make simple things complicated

It really makes sense. The full text, created by linguist Chao yuenren, was as going: 石室诗士施氏，嗜狮，誓食十狮。施氏时时适市视狮。十时，适十狮适市。是时，适施氏适市。氏视是十狮，恃矢势，使是十狮逝世。氏拾是十狮尸，适石室。石室湿，氏使侍拭石室。石室拭，氏始试食是十狮。食时，始识是十狮，实十石狮尸。试释是事。 Chao wrote this essay, in ancient Chinese, with which he was trying to manifest that Chinese has lots of homophone groups (he was giving one here), and most of Chinese characters, which are monosyllabic, can solely function as a word, therefore it is very difficult to tell them apart from each other only by the syllable, including tone.

another essay by 杨富森: 于瑜欲渔，遇余于寓。语余：“余欲渔于渝淤，与余渔渝欤？” 余语于瑜：“余欲鬻玉，俞禹欲玉，余欲遇俞于俞寓。” 余与于瑜遇俞禹于俞寓，逾俞隅，欲鬻玉于俞，遇雨，雨逾俞宇。余语于瑜：“余欲渔于渝淤，遇雨俞寓，雨逾俞宇，欲渔欤？鬻玉欤？” 于瑜与余御雨于俞寓，余鬻玉于余禹，雨愈，余与于瑜踽踽逾俞宇，渔于渝淤。

U can search 《季姬击鸡记》、《余与鱼》、《饥鸡集矶记》、《遗镒疑医》and so on.

http://ru.wikipedia.org/wiki/%D0%A8%D0%B8_%D0%A8%D0%B8_%D1%88%D0%B8_%D1%88%D0%B8_%D1%88%D0%B8 獅食豕史 [作者：隋景芳] 獅識豕，豕識獅。始，獅嗜舐豕；豕適。豕時侍獅食柿，獅適。時逝，獅始試豕勢。獅舐豕時，適時試噬豕。獅嗜豕時，豕試噬獅。獅嗜豕時，豕適示獅。豕噬獅 時，獅奭。豕始識獅勢實勢。豕蓍筮，筮示：獅實誓噬弒豕。豕飾失勢，事事適獅。時時侍獅。師事獅。試使獅釋豕。 是時，豕視虱噬獅，獅拭虱，獅實失適。豕舐獅時，噬虱示獅。豕時時噬虱示獅，使獅適。獅視豕噬虱，獅釋。獅始識豕勢實是噬虱，豕失勢。獅始矢誓弒豕。適 時，豕適噬虱示獅，獅示豕：豕噬虱失實，豕實是試弒獅。獅始施獅式示豕。豕視獅式，豕失屎。獅始噬弒豕。 獅噬食豕勢，豕失勢，豕逝世。 適時，拾豕駛適。拾豕視豕屍，奭。拾豕誓師，誓使獅釋豕屍事實。獅釋：獅食實是柿，食豕是失實。獅視豕是‘士’，豕視獅是‘師’。獅事事適豕，豕失識世事。豕時拭獅豕屎；時施矢石弒獅。適時獅駛，豕施矢石弒獅失事，豕弒豕，豕逝世。獅飾弒豕事實，拾豕釋，駛逝。 豕逝世，獅失豕侍。獅食失柿。獅始試食豕屍。獅食豕屍實適。獅始識豕屍實適獅食。是始，獅時時弒豕，嗜食豕屍。 始，獅視拾豕勢似獅。時逝，獅始識，拾豕勢實似豕。視拾豕是拾屍。適時，獅視拾豕適，獅施獅式示拾豕。獅恃勢噬弒豕。拾豕失是豕，拾豕駛逝。 獅拾豕屍適市。使絁飾豕屍。獅視市，示市：獅是豕師，豕師事獅。豕視師失食，豕矢誓使師食豕。豕逝世，侍師食豕屍，豕實是‘士’。獅食豕，獅失‘士’，實 獅蝕。是使獅謚豕：‘豕氏’。謚豕‘仕’。獅示市：拾豕師事‘豕士’。 獅時適市，施獅式示市。詩《獅食豕史詩〉示市： 獅食實是豕，豕食實是柿。時時獅食豕，世世豕食柿。 事實是事實，實事是實事。世視獅食豕，實是事實事。