Final answer:
The question lacks context, but a character studying astronomy planned to travel to a far-off country to make his true power felt, potentially indicating David's intention after his father sold the town.
Step-by-step explanation:
The addressed question does not provide sufficient context to determine with certainty where David planned to go after his father sold the town. However, in one of the texts provided, a character that might be the mentioned David had studied Chinese works on astronomy and decided, '...as soon as he could get out he would go to some far-off country, where he was not known, and make his true power felt.' This suggests that if the character in question is indeed David, his plan was to travel to a distant land where he was unknown.