Thanks for the replies.
1) Fortunately or unfortunately, my extended family has.... "recently" started the practice of splitting a loved one's ashes - since we are split all over the world (and some have no issue / descendants), so part of the ashes will be placed in a temple that is close to where the majority of family members are located while another part will be placed in a colambarium. For those of us who cannot go to the columbarium to pay our respects (for e.g. it may be in another part of the country or world), we can just head to that temple.... was meant to be more convenient for us.
But welp, if the soul will really be weakened, I would have to advice them against doing this practice next time

2) I asked about the ancestral tablet because I will be moving to a new home soon, and was wondering whether to activate a guardian deity and an ancestral tablet. I make it a point to be quite devout to my ancestors, so I would feel quite pleased if they could accompany me in my new home in some way (was actually thinking of having ancestral tablets from both my parents' side and wife's side in my home, but if you do not think it is a very good idea........). My parents and wife's parents are still alive and healthy, all grandparents are gone though. Each family has respective ancestral tablets in ancestral home or main family homes.
Can I trouble you for your thoughts? Is it OK to activate ancillary ancestral tablets for my own home while there are main ones in ancestral homes or do you advice against it? Or should I consult a sifu and get his or her opinion on this matter?
3) Understood about the scary things part. I was quite fascinated about the being that has a head of a horse on the body of a human... turns out such a being is quite ubiquitous in the world. A being like this is known as Tikbalang in the Philippines and as Nuckelavee in Scandinavia / Scotland.
And if such a being exists in the spiritual world, then the Wendigos of North America should also be a real thing...... that one is *bleeping* dangerous.
Thanks once again for sharing your knowledge and experience.
Only legit heir can keep ancestral tablets. He must be son of male line descendants. Ancestral tablet can't be duplicated. Take it or leave it. Please show respect when you're into it. If you are avid ancestors worshipper how come you don't know this rule? Why you call your father old man?
Don't tell me you are trying to steal other families' tablet and ancestors souls to feed your demon. Insap la, demon worshipper. Your avatar betrayed you.