HAIKOU, May 31 (Xinhua) -- An iron anchor and a box have been discovered near one of the two South China Sea ancient shipwrecks where a Chinese archaeological investigation is ongoing.

Approved by the National Cultural Heritage Administration, a deep-sea archaeological team is conducting the first stage of investigations at the site of the No. 1 and No. 2 shipwrecks on the northwest continental slope of the South China Sea from late May to early June of this year.

The iron anchor and the box were discovered in the southwestern direction of the No. 1 shipwreck site, with a distance of about 50 meters between them.