[Male-oriented, no female lead, interstellar setting, making art. It isn't about spreading civilization, but reviving it. Interstellar people don't speak an interstellar language; they speak Chinese, since China unified the world.]
A virus sweeps across the stars, gradually weakening the bodies of interstellar people. The disease is named "Withering." Then they discover that art can cure it, and interstellar art flourishes in every form.
Shen Yu has only just arrived in this world when his parents die, but he inherits a fortune big enough to last five lifetimes.
But he finds interstellar art far too dull, so he decides to develop art himself, indulge in his own peculiar tastes along the way (not really), and revive interstellar civilization.
[An easygoing story that touches on many fields and features many secret identities. The protagonist stays behind the scenes, so he gets less focus than the players and their works.]
Not bad, keep it up!