Scarlet Heart is a 2011 Chinese television series based on the novel Bu Bu Jing Xin by Tong Hua. It premiered in China on Hunan Broadcasting System (HBS) on 10 September 2011.

Startling by Each Step, also known as Bubu Jingxin, was Tong Hua's debut novel. Originally published online in 2005 on Jinjiang Original Network (晉江原創網), it was later published by Ocean Press (海洋出版社), National Press (民族出版社), Huashan Arts Press (花山文藝出版社), Hunan Literature and Art Publishing House (湖南文藝出版社), and Yeren Culture Publishing (野人文化出版社). Tong Hua revised the novel in 2009 and 2011. The latest edition contained an additional 30,000 word epilogue.