The head of EachNet, eBay's principal internet auction site in China, has stepped down from his post, the Wall Street Journal reported. Martin Wu, who had been in the top job for a year, is to pursue opportunities outside of eBay, the company announced Wednesday. Leff Liao will take over Wu's responsibilities in addition to running PayPal China, which provides EachNet's transaction processing services. The company also suggested that the two strands of its China business, now headed by one person, could eventually be merged. Wu's departure comes amid growing concerns about the fading fortunes of foreign internet companies in China. EachNet has been overtaken by domestic auction site Taobao, Google's Chinese language search engine is losing more ground to market leader Baidu, and Yahoo is struggling to make the most of its US$1 billion investment in Alibaba, Taobao's parent company.