It is a complete nonsense. When you have Deutrium-Deutrium fusion, there is neutron emission. It will not change regarding the purpose of your doing so. The fact that it requires D2-D2 fusion to generate the Helium-3 fuel renders this project futile. It goes back to step 1 again. It is still neutronic fusion because you need the Helium-3 fuel.

Public Wifi of course is not safe. Avoid using them at all cost. Public chargers are easy. There are so many cheap to hell USB cables that do not have data wire. No data is possible for those cheapo USB cables. Buy one and use it for public chargers. It is physically not possible to pass any data and thus is not hackable. Those cut corner function down USB cables are godsend for hacking prevention using public charges.

For all localization effort, Linux and Windows, there are two different path and always co-exists. On the one hand is chinese all over. Menu items, dialogue box, help files etc. Actually chinese is everywhere. The other is to load a chinese shell over the normal core in the form of a external program. I think you will have what you want. Even chinese windows dominate here, we still have external program approach. We can still use english version and run a external program to input chinese if we need. However, it will be more and more towards all chinese.