After a 20% hike, the cost of Chinese Vase is Rs 2000.

Let the original price of the object be $x$.

According to the question, we have:

$20 \%$ of $x+x=2000$

$\Rightarrow \frac{20 x}{100}+x=2000$

$\Rightarrow \frac{120}{100} x=2000$

$\Rightarrow x=\frac{200000}{120}$

$\Rightarrow x=1666.67$

Thus, the original price of the object was Rs $1,666.67$.