That time you were trapped by the airflow. Shanghai to Sydney is a vertical longitudinal route, so it will be bumpy from beginning to end. This is a simple example. You can't blow casually when you encounter strong winds on the ground. It's not a problem for airlines or pilots at all, nor is it a problem that affects safety at all.

The rankings of these three major airlines are similar in China, and the training of pilots in very advanced positions in the world is also very strict, not to mention aircraft.