1 metabolism (biology)

2 the new replaces the old (idiom)

1 bill

1 bank account

2 online account

1 account

2 username

1 surname Chen

2 Chen (c. 1045 - 479 BC), a Zhou dynasty state

3 Chen (557-589), one of the Southern Dynasties 南朝[Nán Cháo]

1 to be nothing to write home about (idiom)

1 with complex feelings (idiom)

1 to push out the old and bring in the new (idiom); to innovate

2 to go beyond old ideas

3 advancing all the time

1 to push out the old and bring in the new (idiom); to innovate

1 metabolism (biology)

2 the new replaces the old (idiom)