Interesting features of chinese numbers: - Each digit is followed by a unit symbol (10's, 100's, 1000's). - Units repeat in levels of 10,000, there are symbols for each level too (except 1's). - The digit 2 has a special form before the 10 symbol and at the end of the number. - If the first digit in the number is 1 and its unit is 10, the 1 is omitted. - Sequences of 0 digits and their units are replaced by a single 0 and no unit. - If there are two such sequences of 0 digits in a level (1000's and 10's), the 1000's 0 is also omitted. - The 1000's 0 is also omitted in alternating levels, such that it is omitted in the rightmost level with a 10's 0, or if none, in the rightmost level. - Level symbols are omitted if all of their units are omitted