Complex sentence: The Ecuadorian embassy in China announced that starting from 1 March 2016, Ecuador will grant visa-free entry to nationals of for 90 days during a 12 months period, the 12-month period follows the date of first entry to Ecuador.
Split into simpler sentences: The Ecuadorian embassy in China announced that starting from 1 March 2016, Ecuador will grant visa-free entry to nationals of for 90 days during each 12 month-period. The 12-month period starts from the date of first entry to Ecuador.