Well no packets that leave your router are safe as you fundamentally lost control of the data, unless you use end to end encryption. As for your local network, do not get a smart meter and when forced (legislation already on books in UK) do not plug it into your LAN. When they insist you plug it into your LAN put it on its won VLAN, oh and turn port isolation on.
Chinese company 9% investment in a games comapny pales into insignificants when compared to the effort the US and UK government go to to track their citizens (Smart meda legislation, injecting compromised encryption into standards etc.). Given the UK and US government have more direct control over my life than the Chinese government, I am not too concerned whith the chinese learning about me, my risk level has not changed and the enemy is still my government and the US.
If you going to be a paranoid conspiracy theorist, at least measure the risk and work out who you really care abouy having information about you. I think you'll find the chinese are the least of your problems, focus on the big variables like US and UK governments first. and any other powers that can directly remove your freedom and freedoms before worrying about a bit player i your life.
Simon