ca. 2205—ca. 1782 BC read as about 2205 to about 1782 BC?

Context:
The CHINESE TELL OF A TIMEduring the Hsia dynasty (ca. 2205—ca. 1782 BC) when our cosmic environment suddenly changed. Ten suns appeared in the sky. The people on earth suffered greatly from the heat, so the emperor ordered a famous archer to shoot down the extra suns. The archer was rewarded with a pill that had the power to make him immortal, but his wife stole it. For that offense she was banished to the moon.