内向 | nèi xiàng | reserved (personality) / introverted / (economics etc) domestic-oriented | |
内敛 | nèi liǎn | introverted / reserved / (artistic style) understated | |
慢热 | màn rè | slow to heat up / (fig.) (of a person) reserved / introverted / slow to develop relationships / (of a product etc) to take time to become popular / (sports) slow to reach peak performance |