Because in order to operate lawfully as a local organization  China requires a large staff, an office, and a large sum of money, in October 2005 Tan opened an account at a branch of Bank of China in Hangzhou with the sum of 500 yuan.
bɪkˈʌz ɪn ˈɔːɹdɚ tʊ ˈɑːpɚɹˌeɪt lˈɔːfəli æz ɐ lˈoʊkəl ˌɔːɹɡɐnᵻzˈeɪʃən tʃˈaɪnɚ ɹᵻkwˈaɪɚz ɐ lˈɑːɹdʒ stˈæf, ɐn ˈɑːfɪs, ænd ɐ lˈɑːɹdʒ sˈʌm ʌv mˈʌni, ɪn ɑːktˈoʊbɚ tˈuː θˈaʊzənd fˈaɪv tˈæn ˈoʊpənd ɐn ɐkˈaʊnt æɾə bɹˈæntʃ ʌv bˈæŋk ʌv tʃˈaɪnə ɪn hˈæŋʒuː wɪððə sˈʌm ʌv fˈaɪvhˈʌndɹɪd jˈuːən.