After failing three times in a row to pay his telephone bill at the Xi'an City Commercial Bank, Mr. Yang finally managed to make the payment. However, when the staff handed him the bill, he was greatly shocked. Even though he had just paid his phone bill, the bill showed that there was still an outstanding balance - and it was an amount that Mr. Yang could never possibly repay. According to the bill, Mr. Yang owed the telecommunications company a staggering telephone bill of 4,503,601,774,848.05 yuan. As a result, Mr. Yang was jokingly referred to by his friends as the "most outstanding debtor in history."