Long Tiankong, the Dragon Emperor, put the final ingredient of a healing pill he had been making and gestured it around with his hands to control it around the blue and gold cauldron in front of him.
Hand gestures weren't necessary to control Qi. At his level, simply using Intent was all it took to do what he had to do. However, the hand gestures did help in tricking his mind into quickly forming those Intent and he didn't have to pay attention to it.
Those hand gestures had become second nature to him, and it was hard to get rid of it anytime soon. Not that he wanted to.
The Dragon Emperor followed the recipe in his mind to the best of his ability. It was an ability trained over thousands of years, so it was more than good enough for what he was doing.