A cactus grown for 10 years has reached 3 m tall and is blooming, and 4 people cannot even lift it

A cactus grown for about 10 years on a rooftop terrace is about to bloom
It is not grafted... The trunk branches at the 1.5 m point, each of the two branches is more than 1 m long, and there is another branch at the base of the trunk
This cactus is 3 m tall. It was brought over from the old home, and when it arrived it was only a little over 1 m. When it was carried upstairs, 4 people lifted it, and they ended up covered in spines!
By the way, people from Chongqing used to love saying one phrase: I [sun, abbreviated] your xianren banban. Anyway, I think this is exactly xianren banban. Anyone who dares to go is a great one, risking their life. Actually, anyone who knows people from Chongqing understands that it seems like a curse word, but what it really expresses is, oh wow, damn.
In Chengdu these past two days, the weather still calls for watering thoroughly once a week, otherwise the leaves will collapse. Fertilize once a year with a light fertilizer.
It bloomed today...