So, what's the point of adding false info in OSM?

That guy is notorious for adding false information/features to OSM.

bad reversion

Bad revertion, again.

Well done.

There is no difference between the two expressions. It is my personal preference to stick to the current wiki. It may be better for you the change the wiki insead of telling people what to do and what not to do all over the place, while others' works have not voilated the rules.

The tag pumping_station=* is
"recommended" as per

osm.wiki/Tag:man_made=pumping_station#Tags_used_in_combination

But you can put back the residential landuse, I don't mind.

FYI the villages are not supposed to be "residential" by their statutory status. The village houses (New Territories Exempted House) are built, individually, on farmland with a special Building Licence issued by Lands Department. All the private land in the villlages is agricultual in nature.

What points and lines are you referring to？

If you are so obsessed with cliffs then it's OK.

There is no "cliff" in the first place, that's why it was deleted instead of being moved to somewhere else.

The height difference is a retaining wall (osm.org/way/1204445516) along Siu Lek Yuen Road, which is appearent ly not a "cliff".

"natural=cliff" is defined in OSM as "a vertical or almost vertical natural drop in terrain topography as it occurs for example in form of coastal cliffs or escarpments."

The location where you put this "cliff" is a relatively gentle slope which I can safely walk through without falling from height.

Why do you insist on reverting a nonexistent feature?

Just read it. Reverting a nonexistent feature is not a good idea IMO.

I personally visited the location several times. That feature (cliff) does not exist.

How come there is a "cliff" across the paths?