Chinese embassy and Cairo airport sources said that a group of around 30 relatives arrived in the Egyptian capital in the afternoon.
Some of them went to hospitals in Cairo where the most seriously injured were being treated while others in the group drove to the holiday resort of Hurghada to identify the bodies.
The identities of 12 of the 14 people killed in Tuesday's crash have been confirmed.
The Chinese ambassador visited the injured at Hurghada hospital on Tuesday and consular and medical delegations were still in the southeastern town to assist the group of holidaymakers.
Their bus spun off the coastal road along the Red Sea as the driver was apparently speeding to reach the Nile city of Luxor after the group fell behind schedule.
Chinese embassy spokesman Gong Yu Seng said that six of the 30 injured were transferred to Cairo overnight as they required special treatment, while the others were still hospitalized in Hurghada.
Medical sources said that two of those transferred were in critical condition, with one suffering from brain hemorrhage and spinal injuries, and the other from serious facial wounds and burns.
Hurghada hospital chief Mohammed Al Sayyed said that the driver lost control of his bus as he was speeding southward shortly after the party of 44 Hong Kong tourists checked out of their Hilton Resort hotel in Hurghada.
They were due to link up with another group before heading to the Nile city of Luxor as part of their 10-day tour of Egypt.
The crash was one of the deadliest such incidents involving foreign tourists in several years and it marred Lunar New Year festivities in Hong Kong.
Chinese Prime Minister Wen Jiabao "has instructed the foreign affairs ministry and the embassy in Cairo to work with the Hong Kong government to provide assistance to victims' families", Hong Kong security secretary Ambrose Lee said on Wednesday.
The accident involving the Hong Kong tourists was one of two tragedies on Egypt's roads on Tuesday.
Twenty Egyptian Coptic Christian pilgrims were killed and 21 injured when their bus hit another vehicle and flipped over into an irrigation ditch near the village of Qaraya, some 600 kilometers (370 miles) south of Cairo.
Some 6,000 people die in road accidents each year in Egypt. A report by the country's transport ministry has said that they were "the second-highest cause of death" in the country.
According to experts, 35,000 people are hurt each year in Egypt in car accidents, which are estimated to cause annual losses of up to $350 million.
Traffic regulations are often badly enforced on Egypt's roads. Many of the country's coastal and desert roads allow for high speeds and accidents caused by reckless overtaking are frequent.
Six Australian tourists died in a bus crash on January 11.
Despite the poor reputation of its roads and air travel in Egypt and the string of deadly terrorist attacks since October 2004, tourist arrivals rose 6 percent in 2005 to reach 8.6 million.
According to Gong, around 60,000 Chinese tourists visited Egypt in 2005.
© 2006 Agence France-Presse
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