反之 (fǎn zhī): Conversely (Conjunction) — Meaning & Stroke Order

Hard work usually leads to success; conversely, laziness may lead to failure.

If policies are properly formulated, the economy will grow steadily; conversely, it may trigger market turbulence.

Don't you think that respecting others wins friendship, whereas otherwise it loses trust?

Eating more vegetables is good for your health; conversely, eating too much junk food is harmful.