In this period, the indigenous Vietnamese culture developed while inheriting a legacy of cultural achievements from the previous period. The representative achievements of this period were Dong Son bronze drum and wet rice cultivation.
Is the bolded phrase a bit too lengthy and unnecessary?
I intended to write: In this period, the indigenous Vietnamese culture developed while inheriting the cultural achievements from the previous period. The representative achievements of this period were Dong Son bronze drum and wet rice cultivation
However, I found that "legacy" and "inherit" are collocations. Therefore, adding it makes the sentence sound more natural. What should I use here?