Firstly, let's calculate the product of 4 and 0. The product of any number and 0 is always 0, so the product of 4 and 0 is 0.
Next, let's calculate the sum of 4 and 0. Adding 0 to any number does not change the value of that number, therefore, the sum of 4 and 0 is 4.
Finally, we compare the product (which is 0) and the sum (which is 4). These two are clearly not equal.
Therefore, we can conclude that Chen is incorrect, as the product of 4 and 0 (0) is not the same as the sum of 4 and 0 (4).