In 2001, keyboardist Ambrosia left the band and was replaced by Vivien Chen. Chthonic then recorded their third album, "Relentless Recurrence", which was based on the legendary Taiwanese ghost story "Lin-tou Jie." The album was recorded in Denmark and released in Taiwan by Crystal Records in 2002. The album retains the symphonic black metal style mixed with Taiwanese elements. "Relentless Recurrence" was also the first Chthonic album written entirely in Taiwanese. In 2002 the band completed their second international tour, and played at the old stadium of National Taiwan University with traditional Taiwanese lion drums and a traditional Taiwanese orchestra.