[pfsb] practicing forms and signs

He has much to do, much to consider, and at times like this he finds that it can be both useful and soothing to practice sword forms. In addition, he has been working on perfecting the Igni sign, and this will be an excellent opportunity to continue his practice.

As a result, Lan Wangji can be found near the lake at present, working with Bichen and with the occasional flicker of light from his hand.