leju holdings limited, through its subsidiaries, provides online to offline (o2o) real estate services in the people's republic of china. the company offers real estate e-commerce, online advertising, and online listing services through its online platform, which comprises websites covering 386 cities and various mobile applications. it also operates various real estate and home furnishing websites of sina corporation (sina); and official accounts on weixin, a social communication platform and weibo, a microblog. in addition, the company provides selling discount coupons; and facilitating online property viewing, physical property visits, marketing events, and pre-sale customer support, as well as home furnishing business transactions on its platform for new residential properties. further, it sells advertising primarily on the sina new residential properties and home furnishing websites; and acts as an advertising agent for the sina home page and non-real estate websites with respect