In 2014, Crypton expressed an interest in creating a Mandarin Chinese voicebank for Hatsune Miku.
On December 3, 2016, during HATSUNE MIKU EXPO 2016 CHINA TOUR, it was announced that a Mandarin Chinese voicebank was in the works and the first demo, "Molihua", was showcased there. According to the advertisements shown at the Expo, the voicebank was said to released "soon". The advertisements also featured a silhouette, which hinted 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.
On April 22, 2017, Miku performed at B.I.G. Carnival 'Banana.IP.Galaxy in Shanghai. At the concert, she performed seven Japanese songs and one Chinese song. This marked the first concert to ever use her Mandarin voicebank.
In August, her official website was launched. It was confirmed that her pre-orders would be opened on August 24.
A convention was planned for August 24. At the convention, a new demo for Miku would be presented and attendees would be able to try her voicebank there. In addition, if they pre-ordered her at the event, they would receive a signed card from Hiroyuki Itoh. It was also confirmed that the illustrator for Miku V4 Chinese was Mamenomoto, the official artist of Snow Miku 2016.
On August 23, Miku's new design, box, and package price were revealed on weibo. While the pre-order was not available yet, the release date was confirmed to be in early September, at least by September 10.
On August 25, it was confirmed that Miku's Chinese package would be available as digital and physical copies. They would also be available for Windows and Mac, and a Piapro Studio standalone version was confirmed to be included. A limited package with additional goods inside would only be sold in Japan. 
According to SCLA's and Mikai Music's Taobao shops, she was to be released on September 2, but the date was later changed back to September 10. At these shops, larger packages were supplied with tutorials for her while the other shops, such as Sonicwire and e-Capsule, carried the smaller packages and digital copies.
Hatsune Miku V4 Chinese was released early around September 5.
|歌に形はないけれど (Uta ni Katachi wa Nai Keredo) - Chinese version||le.com (24 minutes in)|
|初嵐 (Chūlán)||Niconico YouTube AcFun|
|你好 (Nǐhǎo)||YouTube AcFun|
|时光船 (Shíguāng Chuán)||YouTube AcFun|
|初嵐 (Chūlán) - Full Version||Niconico YouTube|
|你好 (Nǐhǎo) - Full Version||bilibili|
|失败作少女 (Shībài Zuò Shàonǚ)||YouTube|
|花与梦 (Huā yǔ Mèng)||YouTube|
|Tempo: 80~135BPM Range: B2~C#4|
|Trial/Demo Vers?: No Starter Available?: No|
|This is the Mandarin Chinese version of the Hatsune Miku software. The vocal sings with a Japanese accent and as Miku is a member of the CV series, her vocals focus on sounding cute.|
|Vocal traits as noted:|
|Phonetic notes as noted:|
|Software issues as noted:|
Hatsune Miku V4 Chinese