Tianwen-3 Mars Sample Return mission is on good track for launch in 2028, sampling in 2030 and return in 2031. The latest video shows the multi-site sampling by drone not gonna happen, only by robotic arm from the lander.
China is sticking to its 2028 launch target for the Tianwen-3 Mars Sample Return mission, aiming to bring at least 500 grams of Martian samples back by 2031.