sphinx如何不通过indexer方式完成中文索引？

sphix不支持实时索引，有一种妥协的增量索引的方法(但只支持新增数据，而不支持修改)，所以我想既然sphinx也支持sql方式操作的话，那么我操作一条数据时，同时也在sphinx中操作这条数据，sphinx和mysql独立开来就好了，但是我按照同样的配置设置一个rt索引后，插入一条带中文的数据，查询中文中某个字或者整个中文句子，都无法查到对应的数据，这是为啥呢?下面贴出配置文件

source src1
{
    type            = mysql

    sql_host        = localhost
    sql_user        = root
    sql_pass        = 123456
    sql_db          = test
    sql_port        = 3306  # optional, default is 3306
    sql_sock        = /tmp/mysql.sock
    sql_query_pre   = SET NAMES utf8

    sql_query       = select id,shop_name,short_name from cg_shop;
    #sql_attr_uint   = id
    #sql_attr_uint   = date_added
}


index test1
{
    source          = src1
    path            = /home/cm/sphinx3/data/test1
    ngram_len       = 1
    ngram_chars        = U+3000..U+2FA1F
}


index testrt
{
    type            = rt
    rt_mem_limit    = 128M

    path            = /home/cm/sphinx3/data/testrt

    rt_field        = title
    rt_field        = content
    rt_attr_uint    = gid
    morphology      = none
    ngram_len       = 1
    ngram_chars     = U+3000..U+2FA1F
}


indexer
{
    mem_limit       = 128M
}


searchd
{
    listen          = 9312
    listen          = 9306:mysql41
    log             = /home/cm/sphinx3/data/log/searchd.log
    query_log       = /home/cm/sphinx3/data/log/query.log
    read_timeout    = 5
    max_children    = 30
    pid_file        = /home/cm/sphinx3/data/log/searchd.pid
    seamless_rotate = 1
    preopen_indexes = 1
    unlink_old      = 1
    workers         = threads # for RT to work
    binlog_path     = /home/cm/sphinx3/data
}

以上，test1索引，我可以搜索中文，但testrt索引我在插入一条新数据后，还是无法搜索中文，请问这是哪里配置有问题么？