Slightly off your topic but I found this part very interesting in relation to the 90days in 180 days visa:
The decree also allows foreign nationals who violate visa regulations to obtain residence permits on the condition that they pay the permit fees and legal penalties if they overstayed their visa. The decree notes that the new regulations seek to fend off any possible negative effects the former regulations may be having on the tourism industry. It also states that well-meaning individuals will be protected by the changes. “Foreign nationals who have overstayed their visas or residence permits ... will be noted in official records, albeit for a brief period.