  Recently there is an alternative reduction method proposed by Chen in [1,2].
In this paper, using the one-loop scalar integrals with propagators having
higher power, we show the power of the improved version of Chen's new method in
which we used some tricks to cancel the dimension shift and the terms we do not
want. We present the explicit examples of bubble, triangle, box and pentagon
with one propagators doubled. With these results, we have completed our
previous computations in \cite{wang} with the missed tadpole coefficients.
