The single-leg match was played behind closed doors at Sammy Ofer Stadium in the northern city of Haifa.
Walter, who replaced Christian Alves in the 83rd minute, latched onto Jonathan Cicero's cross and needed just one touch before rifling a shot into the bottom right corner.
The idea to add some leadership skills to exiting teenage talents could well pay off if the Swiss coach can create stability.
Last season's top scorer Pierre-Emerick Aubameyang completed the scoring ten minutes later, finishing off a fine team goal by curling home from Willian's assist.
Domenec Torrent's team looked a shadow of the side that dominated Brazilian and South American football last year as Independiente secured their third win from as many matches and rose to the top of Group A.
The game's turning point came in the 86th minute as Bi Jinhao tapped Yu Hanchao's cross to level the game for Shenhua, and that was just the right reward for Shenhua head coach Choi Kang-Hee, who made a raft of changes midway through the second half. Enditem
New Betis coach Manuel Pellegrini made his presence felt as his side defended much better than they did last season in their 1-0 win away to Alaves last week, while Valladolid were slightly unlucky to only draw 1-1 at home with Real Sociedad.
SHAOXING, China, Sept. 15 (Xinhua) -- The world's longest leap this year was produced by Chinese long jumper Wang Jianan, who achieved 8.36 meters at the 2020 Chinese National Athletics Championships here on Tuesday.
Gong Kewei of Hubei competes during the javelin throw of Decathlon on Day 2 of the 2020 Chinese National Athletics Championships in Shaoxing, east China's Zhejiang Province, Sept. 16, 2020. (Xinhua/Jia Yuchen)
In the game against Shenzhen FC, Jiangsu Suning broke the deadlock in the 31st minute. Shenzhen keeper Guo Wei could only parry Gao Tianyi's shot and Ivan Santini turned in the rebound.
Depending on local rules and arena capacity, the number of fans will differ.