Sirius in Tibet?

[canismajorette]

No: HPFGUIDX 85587

Don't we hear in the first few pages that Sirius has lately been in 
Tibet? Do I recall that correctly? Then, it seems, no more is made of 
this, if I recall correctly.  Now isn't that sort of a conspicuously 
odd detail?  Should we expect this theme to resurface at some point?

What with the mysticism associated with the Tibetan region, this 
could have profound implications.  Before China seized this area, it 
was rife with not just standard Buddhism, but also many indigenous 
forms of magical practice. Many are the stories about westerners who 
have gone there for instruction in extraordinary doctrines and 
rigorous spiritual disciplines.  It is said that in the most 
inaccessible heights of the Tibetan Himalays live immortal spiritual 
beings, called the Rishis by Vedic tradition, and the Planetary 
Hierarchy by modern western esotericism.

Again, I think it is not just a throw-away line that JKR alludes to 
Tibet, since it is such a potent source of spiritual knowledge.