Baidu has seen a large jump in profits following a push in its mobile and AI technologies. The company's second quarter results were released recently, showing an annual rise in profits of 83%. Baidu's chief operating officer, Qi Lu, said that the growth was mostly down to the company's recent investment in AI and mobile advertising. A market researcher, Raymond Feng, commented that Baidu “has really improved search relevance and upgraded its user experience”. The news means that Baidu is now on its way to catching up with its main Chinese rivals, Tencent and Alibaba, who have long demonstrated a focus on mobile. The news comes not long after an announcement that Baidu would be joining forces with PayPal in order to offer easier mobile payment on international purchases for Chinese users.