In 2014, Crypton expressed an interest in creating a Mandarin Chinese voicebank for Hatsune Miku.
On December 3, 2016, during HATSUNE MIKU EXPO 2016 in CHINA, it was announced that a Mandarin Chinese voicebank was in the works and the first demo, "Moli Hua" was showcased there. According to the advertisements show at the Expo, the voicebank was said to released "soon". The advertisements also feature a silhouette, hinting a new design for the voicebank, as well as introducing an upcoming website that allows fans to feature their works with her Chinese voicebank: poppro.cn. A talkloid featuring her Chinese voicebank was also shown.
Prior to HATSUNE MIKU EXPO 2016 in China, Wat posted a few tweets that were likely referring to the new Chinese voicebank. He noted that a talkloid in a foreign language was finishing up its tuning. He also wrote that he submitted the president a demo sample featuring the new voicebank and that the beta version of the voicebank had an increased clarity.
On December 7, Wat tweeted that Miku Chinese is also dubbed "V4C" for "VOCALOID4 Chinese" rather than "V4X". In addition, he mentioned that they were looking for scattered data in the voice scanning. He was hoping that the production would be packed up within the next two months. On December 20, Wat tweeted that they were adjusting her pronunciation.