 They were booked by Chinese Buddhist pilgrims for passage to Southern India and Sri Lanka.Bas reliefs of Sailendran and Srivijayan large merchant ships with various configurations of tanja sails and outriggers are also found in the Borobudur temple, dating back to the 8th century CE.By the 10th century CE, the Song Dynasty started building the first Chinese junks, which were adopted from the design of the Javanese djongs.