thirty-eighth year H2 of the 60 year cycle, e.g. 1961 or 2021
cf 辛丑條約|辛丑条约, Protocol of Beijing of 1901 ending the 8-nation intervention after the Boxer uprising
Definitions (Wiktionary)
noun
The thirty-eighth term of the Chinese sexagenary cycle, sometimes glossed as "Metal Ox" from its associated terms in the Chinese elements and zodiac.