I've heard that Mati Si doesn't open for all year round, so is it true?

And I'd like to visit there in mid Oct. (may be around 20th). Does it still open for sightseeing?
And what is the best way for solo traveller to visit Mati Si and Danxia landform in the same day btw. hiring taxi or getting one-day tour?
if tour, how can I get it? Where is the place can arrange this kind of tour and how much does it cost?
if taxi, how much does it cost now? i read that 3 years ago, it cost around 200 RMB.

Thanx in advance.