Art E-commerce site

I currently have an online store through Shopify but am looking to expand from that to something more intuitive and interactive. The site currently has a catalogue of products available, limited search functions etc but we need to expand this to create a formal shopping cart, this should also include shipping and handling costs. The site should be in English and Chinese and either would be adapted to create "galleries" have options to share galleries with friends on social media (both Western and Chinese social media). I would like to first adapt and tailor the shopify site to fit out needs but later on it might be that the Shopify site is not enough and a Drupal platform needs to be added on but ideally we would start by modifying the Shopify site where necessary. A full backend and CMS platform would also be needed for reporting, analysis and financial recordings. It should also be a platform that we can develop and build on over time as the technology advances and one that an in house team can use easily over time. This must be in Chinese and English so Chinese language and integration of payment systems etc must also be understood clearly. Coding knowledge and design aesthetic a must. Chinese language a must. Attention to detail a must.