China's Zhu Ting (L) is crowned during the round-robin match between China and Serbia at the 2019 Women's Volleyball World Cup in Osaka, Japan, September 28, 2019. (Photo: Xinhua News Agency)   Head coach Lang Ping said China will face greater challenges at next year's Tokyo Olympics.   "We had no chance in this tournament in Italy, Serbia is missing some important players. I think there will be a lot of title contenders in Tokyo and we need to continue to improve and be better prepared," Lang said at a press conference afterward. In a 12-round round-robin match held on Sunday, the Chinese team defeated Serbia 3-0 to win the championship with its tenth consecutive victory.   She added: "We have improved a lot through training. I'm delighted that the players were able to show what they have learned over the past few months."   Captain Zhu Ting, who scored a game-high 18 points in Saturday's game, also believes her team is stronger than last year, when they won a bronze medal at the World Championships in Japan.   "I think we are stronger now because of the progress each of us has made," she said.   Outside hitter Zhang Changning was satisfied with her performance in this tournament as she ranked third in the attacker rankings.   "I just give myself one small goal at a time and then I can improve, and I'm happy to be able to help the team more this time," she said.   Intermediate hurdler Yuan Xinyue has her sights set on next year's Olympics.   "We have gained great experience from this competition, and the championship is an encouragement to us," she said. "We have to think about the Olympics. We are improving, and our opponents are also improving. We must be better prepared."