This is just jingoistic scaremongering. These things are not done in the open. Not just China anyone could be doing anything.
Everyone familiar with history knows the consequences of surveillance, most people don't like surveillance but is that stopping anyone?
China is not the one bombing random countries and killing hundreds of thousands of people and setting entire societies back decades. These are crimes against humanity with no accountability and consequences for those involved so where is the ethics and morality? China is not the one who used just discovered nuclear weapons recklessly on a civilian population, not once but twice.
Blanket statement of ethics and morality are meaningless when not consistent with actions on the ground. They merely serve to fabricate a non existent moral high ground whose existence requires a denial and diminishment of one own actions while pointing fingers and demonizing others. Posturing may be fun but ignoring the ethical deterioration in your own society has consequences.