zagreb - table tennis colossus china fielded seven players each to the men's and women's singles competition. four days

and three rounds into the world championships, china has reported no casualty.

china's wang liqin (r) and wang hao return a forehand against seiya kishikawa and jun mizutani of japan during their

quarter-final match of the table tennis world championships may 24, 2007. [xinhua]

wang liqin, hao shuai, chen qi and hou yingchao triumphed thursday night, joining ma lin, wang hao and ma long in the

last 16.

defending champion and second seed wang liqin gave a 11-7, 11-5, 11-3, 11-9 beating to argentina's liu song, who plays a

chop-and-attack game.

ugg boots sale hou yingchao, also a defender-cum-attacker, shook off a first set embarrassment in which he had trailed 0-9, as he beat

sweden's fredrik hakansson 2-11, 13-11, 11-5 timberland , 11-9, 11-6.

hou was upset over a reporter's question on his first set trailing, saying: "even if i was three sets down, i would have

come back to win the match."

hao shuai had been humiliated too, in the third set of his 11-9, 15-13, 0-11, 11-8, 11-5 victory over south korean

penholder lee jung woo.

chen qi reached the fourth round after trouncing chinese taipei' s chiang peng-lung 11-5, 11-6, 11-8, 11-8.

ma lin, four-time world cup winner who has never won a singles world championship, blanked spaniard he zhi wen 11-8, 15-

13, 11-9, 11-8 earlier in ugg boots uk the day, while ma long whitewashed german christian suss 11-8, 11-5, 11-9, 11-5.

suss' teammate bastian steger fell to chinese olympic silver medalist wang hao, 11-9, 11-6, 11-6, 11-6.

in the women's action, chinese yao yan had the most difficult win as her more heralded teammate zhang yining had the

easiest.

the 18-year-old yao, who joined china's world championship team at the last minute, outlasted hong kong player lin ling

11-7, 5-11, 6-11, 11-9, 7-11, 11-5, 16-14 black ugg classic tall .

tan wen ling of italy, scheduled to face world no. 1 zhang yining thursday night, pulled out of the world championships

in the morning, citing a right shoulder injury.

gennaro bozza, a veteran reporter with the italian newspaper la gazzetta dello sport and a friend of tan, had a different

explanation.

he said tan was forced to quit the zagreb championships after she challenged the authority of the italian table tennis

association.

"tan was told last night in a team meeting that the italian team no longer needed the service of a rebel and she should

go home immediately," said bozza.

second-seeded chinese wang nan and chinese national champion peng luyang respectively beat hong kong players zhang rui

and jiang huajun.

chinese guo yue and guo yan, who are not related, beat wu jiaduo and nicole struse, both of germany, in five sets.

chinese li xiaoxia sent svetlana ganina packing.

china has booked three timberland boots semifinal spots in the mixed doubles and two each in the men's and women's doubles.