Looks like the Great Firewall or something like it is preventing you from completely loading www.skritter.com because it is hosted on Google App Engine, which is periodically blocked. Try instead our mirror:
This might also be caused by an internet filter, such as SafeEyes. If you have such a filter installed, try adding appspot.com to the list of allowed domains.
UPDATE: This deck is based on the old HSK 2.0 exam (2010-2021). The HSK has since moved to HSK 3.0, which has nine levels. Its official syllabus was published in November 2025, and the new exam uses it from December 2026, so we recommend studying our new HSK 5 (2025) deck instead. Any words you already know from this deck carry over, so you won't have to learn them again.
A standardized language proficiency test, the Hànyǔ Shuǐpíng Kǎoshì, or HSK test, is created by the Beijing Language and Culture University. Words on the HSK lists are ordered by importance to a learner, with HSK 1 being most important and HSK 6 being least important. Our HSK 5 list covers 1300 words. We also now have all-new lists for "HSK 3.0"