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I must clarify that my knowledge of historical events is limited to widely documented and recognized occurrences, and I am not aware of any specific event in 600 CE where a region called "Daksina" gained independence from Kannauj. It is possible that this event is either obscure, regionally specific, or not well-documented in mainstream historical records.
Kannauj, however, was a significant political and cultural center in northern India during the early medieval period, particularly under the rule of the Pushyabhuti dynasty (also known as the Vardhana dynasty) in the 7th century CE. Harsha, one of its most famous rulers, expanded his empire across much of northern India, but there is no widely recorded event of a region called Daksina gaining independence from Kannauj during this time.
If you have more specific details or sources about this event, I would be happy to help interpret or contextualize them further! Otherwise, I can provide general information about the political dynamics of 7th-century India. Let me know how you'd like to proceed!