With the influence that globalization brought along and with hopes of linking up with the world, having a second foreign language has become crucial. Being the language spoken by the most people worldwide, English is a popular choice for foreign language acquisition. While modern technology has realized automated speaking assessment in recent years, there still has been limited research and development focusing of automated speaking assessment platforms for native Chinese speakers. This paper presents the speaking practice tool on TEEMI (Test of English for English Medium Instruction). This tool provides the opportunity for users to practice English speaking, and for teachers to adjust their teaching approach accordingly. TEEMI speaking tasks allows users to showcase and enhance their English-speaking proficiency. All TEEMI speaking tasks are in open-speech format. Additionally, TEEMI can be accessed on all kinds of devices, i.e. PC, laptop, tablet, and smartphone. The total user count of TEEMI speaking tasks has surpassed 20,000 in Taiwan.